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FIGURE 5. Bresilia gibbosa n in A new species of the rare caridean genus Bresilia Calman (Crustacea: Decapoda: Bresiliidae) from the Ryukyu Islands, Japan, representing a family new to the North Pacific marine fauna

FIGURE 5. Bresilia gibbosa n. sp., underwater photographs in situ, showing living animals. A, holotype, ovigerous female (cl 1.6 mm), CBM-ZC 9868; B, paratype, male (cl 1.3 mm), CBM-ZC 9869. Photography by Y. Yamada.

FIGURE 4. Bresilia gibbosa n in A new species of the rare caridean genus Bresilia Calman (Crustacea: Decapoda: Bresiliidae) from the Ryukyu Islands, Japan, representing a family new to the North Pacific marine fauna

FIGURE 4. Bresilia gibbosa n. sp., holotype, ovigerous female (cl 1.6 mm), CBM-ZC 9868. Left appendages. A, third maxilliped, lateral view; B, same, proximal part of antepenultimate segment of endopod and exopod, dorsal view; C, first pereopod, lateral view; D, same, dorsomesial view; E, same, fingers, ventrolateral view; F, second pereopod, lateral view; G, same, chela, extensor view; H, third pereopod, lateral view; I, same, propodus and dactylus, lateral view; J, fourth pereopod, lateral view; K, same, propodus and dactylus, lateral view; L, fifth pereopod, lateral view; M, same, propodus and dactylus, lateral view. Scale bar: 0.5 mm.

FIGURE 2. Bresilia gibbosa n in A new species of the rare caridean genus Bresilia Calman (Crustacea: Decapoda: Bresiliidae) from the Ryukyu Islands, Japan, representing a family new to the North Pacific marine fauna

FIGURE 2. Bresilia gibbosa n. sp., holotype, ovigerous female (cl 1.6 mm), CBM-ZC 9868. A, rostrum and anterior part of carapace, lateral view; B, rostrum, anterior part of carapace and cephalic appendages, dorsal view (setae partially omitted; distal part of outer flagellum of left antennule broken off); C, third to eighth thoracic sternites, ventral view (left pereopods and right fourth and fifth pereopods removed); D, epistome and left antennae, ventral view (setae and antennular flagella omitted; antennal flagellum missing); E, close up of distal part of ultimate segment of third maxilliped, lateral view; F, close up of fingers of second pereopod, lateral view; G, telson and left uropod, dorsal view. Scale bars: 0.5 mm for A–D, G; 0.25 mm for E, F.

FIGURE 3. Bresilia gibbosa n in A new species of the rare caridean genus Bresilia Calman (Crustacea: Decapoda: Bresiliidae) from the Ryukyu Islands, Japan, representing a family new to the North Pacific marine fauna

FIGURE 3. Bresilia gibbosa n. sp. A–E, holotype, ovigerous female (cl 1.6 mm), CBM-ZC 9868; F–H, paratype, male (cl 1.3 mm), CBM-ZC 9869. Left appendages. A, mandible, inner view; B, maxillule, outer view; C, maxilla, outer view (proximal endite broken off); D, first maxilliped, outer view; E, second maxilliped, outer view; F, dactylus and distal part of propodus of third pereopod, lateral view; G, endopod of first pleopod, dorsal view; H, endopod and appendices internal and masculina of second pleopod, ventral view (setae on endopod omitted). Scale bars: 0.25 mm.

FIGURE 1. Bresilia gibbosa n in A new species of the rare caridean genus Bresilia Calman (Crustacea: Decapoda: Bresiliidae) from the Ryukyu Islands, Japan, representing a family new to the North Pacific marine fauna

FIGURE 1. Bresilia gibbosa n. sp., holotype, ovigerous female (cl 1.6 mm), CBM-ZC 9868. Entire animal in lateral view. Scale bar: 1 mm.

FIGURE 4 in New and rare bivalve species for the fauna of the Kuril Islands (northwestern Pacific Ocean): A study of materials collected over 70 years of expeditions (from 1949 to 2019)

FIGURE 4. New and rare bivalve species for the fauna of the Kuril Islands. (A, B) Macoma torelli (Kunashir Island, 220 m, shell length 16.0 mm). (C, D) Kellia comandorica (Urup Island, 20 m, shell length 13.2 mm). (E, F) Kellia kussakini (Urup Island, 10 m, shell length 3.8 mm). (G, H) Adontorhina cyclia (Kunashir Island, 200 m, shell length 2.2 mm). (I–L) Adontorhina inflata (Zelyony Island, 1,742 m): I, exterior view of right valve (shell length 1.4 mm); J–L, scanning electron micrographs: (J) right valve (interior view), (K) both valves (dorsal view; RV up), (L) hinge plate of right valve. (M, P) Netastoma japonicum (South Kuril Strait, 25 m, shell length 12.7 mm). Scale bars: J–L=100 μm.

FIGURE 2 in New and rare bivalve species for the fauna of the Kuril Islands (northwestern Pacific Ocean): A study of materials collected over 70 years of expeditions (from 1949 to 2019)

FIGURE 2. New and rare bivalve species for the fauna of the Kuril Islands. (A, B) Acila divaricata (Kunashir Strait, 200 m, shell length 29.7 mm). (C, D) Acila insignis (Yuri Island, 1000 m, shell length 11.0 mm). (E, F) Nuculana ensiformis (Shikotan Island, 200 m, shell length 22.5 mm). (G, H) Poroleda ushakovi (Shumshu Island, 820 m, shell length 17.1 mm). (I, J) Robaia robai (Kunashir Strait, 300 m, shell length 16.3 mm). (K, L) Yoldia hyperborea (Paramushir Island, 215 m, shell length 19.0 mm). (M, N) Scanning electron micrographs of Huxleyia pentadonta (Paramushir Island, 214 m, shell length 2.3 mm). (O, P) Samacar kurilensis (Iturup Island, 265–270 m, shell length 16.5 mm). (Q, R) Tetrarca boucardi (Shpanberg Strait, 55 m, shell length 20.0 mm). (S, T) Limopsis oliveri (Urup Island, 50 m, shell length 9.0 mm). (U, V) Limopsis vaginata (Iturup Island, 600 m, shell length 26.3 mm).

FIGURE 3 in New and rare bivalve species for the fauna of the Kuril Islands (northwestern Pacific Ocean): A study of materials collected over 70 years of expeditions (from 1949 to 2019)

FIGURE 3. New and rare bivalve species for the fauna of the Kuril Islands. (A, B) Limatula attenuata (Iturup Island, 330 m, shell length 6.6 mm). (C, D) Limatula subauriculata (Iturup Island, 50 m, shell length 4.6 mm). (E, F) Musculus impressus (Urup Island, 123 m, shell length 17.7 mm). (G, H) Parvamussium intuscostatum (Onekotan Island, 146–147 m, shell length 17.2 mm). (I, J) Cardiomya cf. tosaensis (Urup Island, 100 m, shell length 7.8 mm). (K, L) Cetoconcha hyalina (Onekotan Island, 150–198 m, shell length 44.0 mm). (M, N) Dermatomya tenuiconcha (Simushir Island, 100 m, shell length 12.0 mm). (O, P) Poromya castanea (Iturup Island, 290 m, shell length 20.5 mm). (Q, R) Parvithracia sirenkoi (Paramushir Island, 400 m, shell length 7.0 mm). (S, T) Panomya ampla (Onekotan Island, 57 m, shell length 61.6 mm).

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FIGURE 1 in New and rare bivalve species for the fauna of the Kuril Islands (northwestern Pacific Ocean): A study of materials collected over 70 years of expeditions (from 1949 to 2019)

FIGURE 1. Map of the study area.