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FIG. 17 in Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d'Histoire naturelle, France, studied by Abel Gruvel

FIG. 17. — Weltnerium bouvieri (Gruvel, 1906), lectotype (MNHN Ci 387); A, right lateral view; B, rostral view; C, carinal view. Scale bars: 3 mm.

FIG. 10 in Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d'Histoire naturelle, France, studied by Abel Gruvel

FIG. 10. — Arcoscalpellum atlanticum (Gruvel, 1900), lectotype (MNHN Ci 398); A, right lateral view; B, rostral view; C, carinal view. Scale bars: A, 3 mm; B, C, 1 mm.

FIG. 4 in Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d'Histoire naturelle, France, studied by Abel Gruvel

FIG. 4. — Gruvelialepas pilsbryi (Gruvel, 1911), paralectotype (MNHN Ci 1); A, left lateral view; B, rostral view; C, carinal view. Scale bars: A, 5 mm; B, C, 3 mm.

FIG. 5 in Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d'Histoire naturelle, France, studied by Abel Gruvel

FIG. 5. — Gruvelialepas pilsbryi (Gruvel, 1911), paralectotype (MNHN Ci 1); A, labrum and palp; B, mandible; C, maxilla I; D, maxilla II. Scale bar: 0.5 mm.

FIG. 3 in Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d'Histoire naturelle, France, studied by Abel Gruvel

FIG. 3. — Euscalpellum renei (Gruvel, 1902), La Calypso (MNHN Ci 374); A, cirrus I; B, median article of cirrus VI; C, protopodite of cirrus VI, caudal appendage and penis. Scale bars: 0.2 mm.

FIG. 12 in Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d'Histoire naturelle, France, studied by Abel Gruvel

FIG. 12. — Arcoscalpellum atlanticum (Gruvel, 1900), lectotype (MNHN Ci 398); A, cirrus I; B, median article of cirrus VI; C, protopodite of cirrus VI and caudal appendage. Scale bars: 0.5 mm.

FIG. 11 in Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d'Histoire naturelle, France, studied by Abel Gruvel

FIG. 11. — Arcoscalpellum atlanticum (Gruvel, 1900), lectotype (MNHN Ci 398); A, labrum and palp; B, mandible; C, maxilla I; D, maxilla II. Scale bars: A, B, D, 0.5 mm; C, 0.2 mm.

FIG. 16 in Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d'Histoire naturelle, France, studied by Abel Gruvel

FIG. 16. — Verum hoeki (Gruvel, 1901), syntype (MNHN Ci 386); A, tergum; B, scutum; C, upper-latus. Scale bar: 1 mm.

FIG. 7 in Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d'Histoire naturelle, France, studied by Abel Gruvel

FIG. 7. — Catherinum recurvitergum (Gruvel, 1900), holotype (MNHN Ci 402); A, right lateral view; B, rostral view; C, carinal view. Scale bars: A, 3 mm; B, C, 2 mm.

FIG. 6 in Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d'Histoire naturelle, France, studied by Abel Gruvel

FIG. 6. — Gruvelialepas pilsbryi (Gruvel, 1911), paralectotype (MNHN Ci 1); A, cirrus I; B, median article of cirrus VI; C, coxopodite of cirrus VI and caudal appendage. Scale bars: A, 1 mm; B, C, 0.5 mm.

FIG. 14 in Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d'Histoire naturelle, France, studied by Abel Gruvel

FIG. 14. — Teloscalpellum luteum (Gruvel, 1900), holotype (MNHN Ci 398); A, labrum and palp; B, mandible; C, D, right and left maxilla I; E, maxilla II. Scale bars: 0.5 mm.

FIG. 18 in Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d'Histoire naturelle, France, studied by Abel Gruvel

FIG. 18. — Weltnerium bouvieri (Gruvel, 1906), lectotype (MNHN Ci 387); A, labrum and palp; B, mandible; C, maxilla I; D, maxilla II. Scale bar: 0.3 mm.

FIG. 2 in Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d'Histoire naturelle, France, studied by Abel Gruvel

FIG. 2. — Euscalpellum renei (Gruvel, 1902), La Calypso (MNHN Ci 374); A, prosoma with filamentary appendages; B, labrum and palp; C, mandible; D, maxilla I; E, maxilla II. Scale bars: A, 1 mm; B-E, 0.1 mm.

FIG. 8 in Revision of the Scalpellidae (Crustacea, Cirripedia) in the collection of the Muséum national d'Histoire naturelle, France, studied by Abel Gruvel

FIG. 8. — Catherinum recurvitergum (Gruvel, 1900), holotype (MNHN Ci 402); A, labrum and palp; B, mandible; C, maxilla I; D, maxilla II. Scale bars: A-C, 0.2 mm; D, 0.5 mm.

FIG. 7. — Hemioniscus pagurophilus n in A new species of Tomlinsonia Turquier, 1985 (Crustacea, Cirripedia, Trypetesidae) in hermit crab shells from the Philippines, and a new parasite species of Hemioniscus Buchholz, 1866 (Crustacea, Isopoda, Hemioniscidae)

FIG. 7. — Hemioniscus pagurophilus n. sp.: A, B, holotype ♂ 1.0 mm (USNM 1084119); A, male dorsal view; B, left antenna, antennule and oral cone; C, allotype ♀ 0.90 mm (USNM 1084121), immature female dorsal view; D, holotype ♂ 1.0 mm (USNM 1084119), pleotelson, dorsal view. Scale bars: A-C, 250 µm; D, 50 µm.

FIG. 6. — Tomlinsonia mclaughlinae n in A new species of Tomlinsonia Turquier, 1985 (Crustacea, Cirripedia, Trypetesidae) in hermit crab shells from the Philippines, and a new parasite species of Hemioniscus Buchholz, 1866 (Crustacea, Isopoda, Hemioniscidae)

FIG. 6. — Tomlinsonia mclaughlinae n. sp., scanning electron micrographs: A-C, paratype ♀ (USNM 1084104); A, mouth cirri and mouthparts, dorsal view; B, mouth cirri and labrum, lateral view; C, maxillae and mandibles, position of stub setae at base of maxillae II shown by arrowhead; D, E, paratype ♀ 5.9 mm (USNM 1084106); D, stub setae; E, denticules of maxilla II. Abbreviations: MD, mandible; M1, maxilla I; M2, maxilla II. Scale bars: A, B, 500 µm; C, 100 µm; D, 5 µm; E, 2.5 µm.

FIG. 4. — Tomlinsonia mclaughlinae n in A new species of Tomlinsonia Turquier, 1985 (Crustacea, Cirripedia, Trypetesidae) in hermit crab shells from the Philippines, and a new parasite species of Hemioniscus Buchholz, 1866 (Crustacea, Isopoda, Hemioniscidae)

FIG. 4. — Tomlinsonia mclaughlinae n. sp., paratype ♀ (USNM 1084165), scanning electron micrographs: A, right opercular bar, lateral outer view; B, left opercular bar, lateral outer view; C, mantle aperture, ventral view (arrowheads show inner ridges); D, multifid denticules on inside of right opercular bar and along inner ridge, apical view; E, denticules and setae on outside of left opercular bar, lateral view; F, terminal cirri, lateral view, arrowhead shows position of cirral "cushion" (inset shows terminal view of cirrus); G, terminal cirri, lateral view, arrowheads show position of cirral "cushions"; H, terminal cirral "cushion" (inset shows denticules of "cushion"). Scale bars: A-C, 500 µm; D, E, H, 20 µm; F, G, 200 µm; insets of F, H, 2.5 µm.

FIG. 3. — Tomlinsonia mclaughlinae n in A new species of Tomlinsonia Turquier, 1985 (Crustacea, Cirripedia, Trypetesidae) in hermit crab shells from the Philippines, and a new parasite species of Hemioniscus Buchholz, 1866 (Crustacea, Isopoda, Hemioniscidae)

FIG. 3. — Tomlinsonia mclaughlinae n. sp., paratype ♀ (USNM 1084097) (note: only selected patches of denticules shown in A, B, J, K): A, right opercular bar, lateral outer view; B, right opercular bar, lateral inner view; C, denticules on outside of right opercular bar, apical view; D, denticules and setae on distal edge of right opercular bar; E, denticules and setae on outside of right opercular bar, lateral view; F, denticules on inside of right opercular bar, apical view; G, multifid denticules on inside of right opercular bar and along inner ridge, apical view; H, plumose seta on inside of right opercular bar; I, denticules on inside of right opercular bar, apical view; J, left opercular bar, lateral outer view; K, right opercular bar, lateral inner view; L, denticules and setae on edge of left opercular bar; M, multifid denticules and setae on outside of left opercular bar, lateral view; N, multifid denticules on inside of left opercular bar, apical view; O, denticules on inside of left opercular bar, apical view; P, denticules along inner ridge (curved line) of right opercular bar, apical view; Q, denticules and setae on inside of left opercular bar, apical view. Scale bars: A, B, J, K, 250 µm; C-F, H, I, L-N, 6.25 µm; G, O-Q, 12.5 µm.

FIG. 5. — Tomlinsonia mclaughlinae n in A new species of Tomlinsonia Turquier, 1985 (Crustacea, Cirripedia, Trypetesidae) in hermit crab shells from the Philippines, and a new parasite species of Hemioniscus Buchholz, 1866 (Crustacea, Isopoda, Hemioniscidae)

FIG. 5. — Tomlinsonia mclaughlinae n. sp.: A, paratype ♀ (USNM 1084097), terminal cirrus, lateral view, arrowhead shows position of cirral "cushion" (inset shows two views of terminal hooks); B, paratype ♀ (USNM 1084112), mouth cirri, lateral view (note: plumose nature of setae not shown); C-E, paratype ♀ (USNM 1084097); C, labrum, lateral view (inset shows short setae that cover extensions of labrum); D, mandible; E, maxilla I and maxilla II. Scale bars: A, B, 50 µm; C, 125 µm; D, 25 µm; E, 12.5 µm; insets of A, C, 6.25 µm.

FIG. 2. — Tomlinsonia mclaughlinae n in A new species of Tomlinsonia Turquier, 1985 (Crustacea, Cirripedia, Trypetesidae) in hermit crab shells from the Philippines, and a new parasite species of Hemioniscus Buchholz, 1866 (Crustacea, Isopoda, Hemioniscidae)

FIG. 2. — Tomlinsonia mclaughlinae n. sp.: A-C, paratype ♀ 5.90 mm (USNM 1084105); A, shell of Drupella cornus cut away to show barnacle in situ, view of columella with aperture (arrowhead) and striae extending toward apex of shell, chitinous attachment disc shown in gray; B, distal end of chitinous attachment disc covering body of barnacle toward apex of shell, minute tubercles that cover entire disc are only drawn in the upper-left portion; C, female removed from shell shown in A, viewed from right side in same orientation as in A (arrow shows rounded dorsal side of mantle orifice), chitinous attachment disc (in gray) is slightly lifted off of barnacle, distal portion of body not drawn; D, paratype ♂ 0.50 mm (USNM 1084107), lateral view; E, paratype ♀ (USNM 1084102), aperture on columella of unidentified gastropod shell; F, G, paratype ♂ 0.68 mm (USNM 1084109); F, lateral view; G, dorsal view. Scale bars: A, 2.0 mm; B, D, F, G, 125 µm; C, E, 500 µm.