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FIGURE 2 in A new species of Muraenichthys (Anguilliformes: Ophichthidae) from Taiwan with redescription of Muraenichthys thompsoni Jordan & Richardson, 1908

FIGURE 2. Line drawings of Muraenichthys longirostris sp. nov. A, lateral view of head with sensory pores; B, teeth on maxilla and palatal area; C, teeth on mandible. IPN, inner opening of posterior nostril [inner hole in Hibino & Kimura (2015)]; OPN, outer opening of posterior nostril [outer hole in Hibino & Kimura (2015)]. Arrows indicate first mandibular (left), frontal (middle) and mid-temporal (right) pores.

FIGURE 1 in A new species of Muraenichthys (Anguilliformes: Ophichthidae) from Taiwan with redescription of Muraenichthys thompsoni Jordan & Richardson, 1908

FIGURE 1. Preserved condition of Muraenichthys longirostris sp. nov., NMMB-P24388, holotype, 206 mm TL, Dong-gang, Pingtung, southern Taiwan.

FIGURE 3 in A new species of Muraenichthys (Anguilliformes: Ophichthidae) from Taiwan with redescription of Muraenichthys thompsoni Jordan & Richardson, 1908

FIGURE 3. Fresh condition of Muraenichthys thompsoni, KMNH VR 100226, 209 mm TL, Dong-gang, Taiwan. A, whole body; B, enclosed view of head.

FIGURE 4 in A new species of Muraenichthys (Anguilliformes: Ophichthidae) from Taiwan with redescription of Muraenichthys thompsoni Jordan & Richardson, 1908

FIGURE 4. Holotype of Muraenichthys thompsoni, SU 20201, 97 mm TL, Manila Bay, Luzon, Philippines. A, enclosed view of head; B, whole body.

FIGURE 6 in Two new species of the genus Ophichthus from the western central Pacific Ocean with a redescription of Ophichthus megalops Asano, 1987 (Anguilliformes Ophichthidae)

FIGURE 6. Preserved condition of Ophichthus brevidorsalis sp. nov., ASIZP 61648, holotype, 398 mm TL, New Caledonia. A, dorsal image; B, ventral image. Arrow indicates origin of dorsal fin.

FIGURE 1. A in Two new species of the genus Ophichthus from the western central Pacific Ocean with a redescription of Ophichthus megalops Asano, 1987 (Anguilliformes Ophichthidae)

FIGURE 1. A, Fresh specimen of Ophichthus megalops, TOU-AE6872, 442 mm TL, Nan-fang-ao, Yi-Lan, Taiwan; B, peritoneum of O. megalops, TOU-AE6875, 349 mm TL, Nan-fang-ao, Taiwan; C, black-tipped anal fin of O. megalops, TOU- AE6872. Arrow indicates origin of dorsal fin.

FIGURE 3 in Two new species of the genus Ophichthus from the western central Pacific Ocean with a redescription of Ophichthus megalops Asano, 1987 (Anguilliformes Ophichthidae)

FIGURE 3. Preserved condition of Ophichthus semilunatus sp. nov., NMMB-P17751, holotype, 500 mm TL, Da-xi, Yi-lan, Taiwan. A, dorsal image; B, ventral image. Arrow indicates origin of dorsal fin.

FIGURE 5 in Two new species of the genus Ophichthus from the western central Pacific Ocean with a redescription of Ophichthus megalops Asano, 1987 (Anguilliformes Ophichthidae)

FIGURE 5. Enclosed view of anus. A, Ophichthus semilunatus sp. nov., NMMB-P17751, holotype, 500 mm TL, Da-xi, Yi-lan, Taiwan; B, O. megalops (irregular pattern), KAUM–I. 125145, 330 mm TL, Dong-gang, Taiwan.

FIGURE 2. A in Two new species of the genus Ophichthus from the western central Pacific Ocean with a redescription of Ophichthus megalops Asano, 1987 (Anguilliformes Ophichthidae)

FIGURE 2. A, Lateral view of head of Ophichthus megalops, TOU-AE6872, 442 mm TL, Nan-fang-ao, Yi-Lan, Taiwan; B, arrangement of teeth on maxilla, palatal area; and C, mandible of Ophichthus megalops, TOU-AE6873, 367 mm TL, Nan-fangao, Yi-Lan, Taiwan. Arrows indicate interorbital (left) and mid-temporal (right) pores.

FIGURE 4. A in Two new species of the genus Ophichthus from the western central Pacific Ocean with a redescription of Ophichthus megalops Asano, 1987 (Anguilliformes Ophichthidae)

FIGURE 4. A, lateral view of head of Ophichthus semilunatus sp. nov., NMMB-P17751, holotype, 500 mm TL, Da-xi, Yi-lan, Taiwan; B, arrangement of teeth on maxilla, palatal area; and C, mandible of Ophichthus semilunatus sp. nov. Arrows indicate interorbital (left) and mid-temporal (right) pores.

FIGURE 8 in Two new species of the genus Ophichthus from the western central Pacific Ocean with a redescription of Ophichthus megalops Asano, 1987 (Anguilliformes Ophichthidae)

FIGURE 8. NJ tree based on COI sequences, constructed using the specimens mentioned in the present study. The bar indicates the evolutionary distances which were computed using the Kimura 2-parameter method.

FIGURE 8 in A review of the finless snake eels of the genus Apterichtus (Anguilliformes: Ophichthidae), with the description of five new species

FIGURE 8. Holotype of Apterichtus jeffwilliamsi, USNM 363869, 305 mm, showing fresh coloration. Photograph by J. Williams.

FIGURE 1 in A review of the finless snake eels of the genus Apterichtus (Anguilliformes: Ophichthidae), with the description of five new species

FIGURE 1. Underwater photograph of living Apterichtus hatookai, taken by J. Shibata at 7 m at Shikohu Island, Japan. Courtesy of Ichthyological Society of Japan

FIGURE 5 in A review of the finless snake eels of the genus Apterichtus (Anguilliformes: Ophichthidae), with the description of five new species

FIGURE 5. Arrow indicates location of median supratemporal pore. A. 3 supratemporal pores (ST), 3 preopercular pores (PO). B. 5 Supratemporal pores (ST), 4 preopercular pores (PO).

FIGURE 10 in A review of the finless snake eels of the genus Apterichtus (Anguilliformes: Ophichthidae), with the description of five new species

FIGURE 10. Dentition of holotype of Apterichtus jeffwilliamsi, USNM 363869, 305 mm. Drawn by Y. Hibino.

FIGURE 12 in A review of the finless snake eels of the genus Apterichtus (Anguilliformes: Ophichthidae), with the description of five new species

FIGURE 12. Dentition of holotype of Apterichtus malabar, AMS I.19426-001, 414 mm. Drawn by Corlis Schneider.

FIGURE 7 in A review of the finless snake eels of the genus Apterichtus (Anguilliformes: Ophichthidae), with the description of five new species

FIGURE 7. Dentition of holotype of Apterichtus dunalailai, MNHN 1987-0810, 289 mm. Drawn by Corlis Schneider.

FIGURE 6 in A review of the finless snake eels of the genus Apterichtus (Anguilliformes: Ophichthidae), with the description of five new species

FIGURE 6. Head of holotype of Apterichtus dunalailai, MNHN 1987-0810, 289 mm. Drawn by Corlis Schneider.

FIGURE 11 in A review of the finless snake eels of the genus Apterichtus (Anguilliformes: Ophichthidae), with the description of five new species

FIGURE 11. Head of holotype of Apterichtus malabar, AMS I.19426-001, 414 mm. Drawn by Corlis Schneider.

FIGURE 3 in A review of the finless snake eels of the genus Apterichtus (Anguilliformes: Ophichthidae), with the description of five new species

FIGURE 3. Underwater photograph of living Apterichtus caecus, taken by P. Gomes at night at 14 m, Funchal, Madeira.