MARINE SILVER HATCHETFI8HES — SCHTJLTZ 649 



distinguish two subspecies: P. spinosus spi7iosus of the Philippines 

 and Celebes Sea and P. spinosus stereope of Japan; see also table 6, 

 p. 636, which gives counts for these two subspecies. 



This leaves the other species in the complex, the one with a slen- 

 der caudal peduncle and longer, more slender posttemporal spine, 

 which was thought to be P. spinosus by Okada and Suzuki, but which 

 is not that species. 



McCulloch (Zoological (-biological) results of the fishing experi- 

 ments carried out by the F.I.S. Endeavour, 1909-1910, vol. 2, pt. 3, 

 pp. 78, 87-89, fig. 4, pt. 5, pi. 16, 1914) described P. tridentifer from off 

 southern Australia. That species has a more slender caudal peduncle, 

 13 to 17 anal photophores, 15 to 18 anal rays, and 12 to 15 pectoral 

 rays. These characters are close to those of our large series of spec- 

 imens from the Philippines and Celebes Sea and must be considered 

 as the P. tridentifer complex. In table 6, the specimens from Japan 

 and the Philippines appear not to differ from the Australian tri- 

 dentifer sufficiently to indicate subspecific populations. 



The characters recorded by Okada and Suzuki (Pacific Sci., vol. 

 10, pp. 298-301, 1956) for their nominal species P. spinosus, such as 

 20 to 25 gill rakers, 12 to 14 pectoral rays, a more slender caudal 

 peduncle, a long slender posttemporal spine, definitely are characters 

 that identify their P. spinosus as actually P. tridentifer. 



Polyipnus spinosus stereope Jordan and Starks 



Figure 25 



Polyipnus stereope Jordan and Starks, Bull. U.S. Fish Comni. 1902, vol. 22, p. 



581, 1904 (Sagami Bay, Japan, holotype USNM 51451, and paratypr 



177895). — Jordan, Tauaka and, Snyder, Journ. College Sci. Imp. Univ. Tokyo, 



vol. 23, art. 1, p. 52, fig. 30, 1913 (Sagami Sea). — Haneda, Pacific Sci., vol. 



6, No. 1, pp. 13-16, 1952 (Japan). — Okada and Suzuki, Pacific Sci., vol. 10, 



pp. 296-302, figs. 1-7, 1956 (Japan). 

 Polyipnus spinosus, Schultz (in part), Proc. U.S. Nat. Mus., vol. 86, pp. 143-144, 



1938 (Japan). — Kamohara, Reports Kochi Univ. Nat. Sci., No. 3, p. 17, 



1952 (Tosa Providence, Japan). 



Study material: USNM 51451 (holotype), off Manazuru Zaki, 

 Honshu Island, Japan, Albatross station 3698, depth 153 fathoms. 

 USNM 102981, Albatross station 4913, lat. 31°39'10" N., long. 

 129°22'30" E., off Japan, 2 specimens, 37 and 43 mm. SNHM 8392, 

 1 specimen, 42 mm. 



Distinctive characters: This subspecies is distinguished from 

 spinosus spinosus in the discussion of the latter beginning on p. 648. 



Color: The color pattern is shown in figure 25, p. 634. 



Description: Counts made are given in table 1, p. 591, and table 

 6, p. 636. 



Range: This species is known from Japan between depths of 

 from 153 to 391 fathoms. 



U.S. GOVERNMENT PRINTINS OFFICE: 1961 



