Hedgpethia chitinosa (Hilton, 1943)

Fig. 2, Table 1

Colossendeis chitinosa Hilton, 1943: 4 .

Colossendeis chitinosa – Hedgpeth 1949: 301, fig. 47e–h. — Stock 1954: 161, fig. 79; 1958: tab. 1. — Utinomi 1955: 34–35, fig. 20; 1959: 220; 1971: 337–338. — Losina-Losinsky & Turpaeva 1958: 23–26, 32 [key], 33 [text], fig. 1, tabs 1, 4–5. — Child 1996: tab. 1.

Rhopalorhynchus chitinosum – Stock 1958: 116 [text], 118 [key], tab. 1; 1970: 9 [key].

Hedgpethia californica – Turpaeva 1973 [partim]: 185 [key], 186–189, tab. 2. — Child 1996: tab. 1.

Hedgpethia californica chitinosa – Turpaeva 1973: 186–189, tab. 3; 2002: 1451, 1451 [text], 1452 [key].

Hedgpethia chitinosa – Nakamura & Child 1983: 63, 63 [key]; 1991: 63. — Nakamura 1987: 36–37, pl. 33. — Stock 1991a: 166 [text]. — Turpaeva 1993: 21 [text]. — Dudnik & Kremenetskaia 2025: tab. 3.

Type material (not examined)

Holotype

BERING SEA • ♀; Aleutians West Census Area (Alaska), Pribilof Islands, south of Saint George Island; 56°1′59.88″ N, 169°30′ W; depth 0–221 m; 17 Jul. 1893; R/V Albatross, United States Fish Commission (USFC) stn 3500; USNM 81496.

Paratypes BERING SEA • 3 specs; Aleutians West Census Area (Alaska), Pribilof Islands, north of Saint Paul Island; 58°23′ N, 170°21′ W; depth 3939 m; 11 Aug. 1895; USFC stn 3603; hosting institution unknown .

Distribution and depth range

Recorded from the Aleutian Islands and the Bering Sea, including off Pribilof Islands (type locality), as well as around Japan (Sea of Japan, coasts of Honshu, Hokkaido and in the Tsushima Straits; Pacific coasts Honshu, Shikoku, Kyushu and down to southwest of Danjo Islands). Minimal known depth range 41–926 m? Hilton (1943) cites three specimens from 1771 fathoms (3939 m), and Dudnik (2025) records one specimen sampled at depths of 6410–6757 m. These four specimens should be reexamined for confirmation, and contamination should also be considered.