198 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Nearly uniform dark gray-brown above lateral line, darkest on 

 crown, snout and predorsal. Paler below, whitish or with yellowish 

 cast beneath. Fins with narrow, white, hind edges. Length, 955 

 mm. (Her re.) 



Philippines. Known only from the type, containing 12 young 

 200-218 mm. long. 



TRIAKIS SCYLLIUM Muller and Henle 



Triakis scylUum Mvjjler and Henle, Syst. Beschr. Plagiostomen, p. 63, pi. 26, 1841 

 (type locality: Japan). — Bleeker, Verb. Batav. Genootsch. (Japan), vol. 

 24, p. 121, 1853 (Japan). — Bbevoort, Narr. Exped. China Japan, Perry, vol. 

 2, p. 285, pi. 12, fig. 1, 1956 ( Simoda ) .—Bleeker. Verh. Batav. Genootsch. 

 (Japan), vol. 26. p. 42, 1857 (Japan). — Dumebil, Hist. Nat. Elasmobr., vol. 

 1, p. 397, 1865 (compiled). — Steindachner, Ann. Hofmus. "Wien, vol. 11, 

 p. 224, 1896 (Kobe, Hiogo, Nagasaki). — Jordan and Sntder, Proc. U. S. 

 Nat. Mus., vol. 23, p. 336, 1900 (Tokyo) ; Annot. Zool. Japan, vol. 3, p. 39 

 (127), 1901 (Yokohama). — Jordan and Evermann, Proc. U. S. Nat. Mus., 

 vol. 25, p. 318, 1902 (Formosa). — Jordan and Fowler, Proc. U. S. Nat. Mus., 

 vol. 26, p. 609, 1903 (Tokyo, Tsuruga, Onomicbi, Hakata). — Pietschmann, 

 Sitz. Ber. Akad. Wiss. Wien, math.-nat. Kl., vol. 117, pt. 1, p. 689, 1908 

 (Japan).— Snyder, Proc. U. S. Nat. Mus., vol. 42, p. 400, 1912 (Tokyo; 

 Misaki).— Garman, Mem. Mus. Comp. Zool., vol. 36, p. 166, 1913 (Japan). — 

 IzuKA and Matstjura, Cat. Zool. Spec. Tokyo Mus. Vertebrata. p. 190, 



1920 (Tokyo).— Waite, Rec. South Australian Mus., vol. 2, p. 20, fig. 25, 



1921 (St. Vincent Gulf).— Mori, Journ. Pan Pacific Res. Inst., vol. 3, p. 3, 

 1928 (Jensen, Korea).— Wu, Contrib. Biol. Lab. Sci. Soc. China, vol. 5, 

 No. 4, p. 7, fig. 5, 1929 (Amoy). — Soldatov and Lindbero, Bull. Pacific Sci. 

 Fisher. Inst., vol. 5, p. 8, 1930 (Far East Seas). — Fowler, Hong Kong Nat- 

 uralist, vol. 1, p. 80, fig. 9, 1930 (China) ; Proc. 4th (1929) Pacific Sci. 

 Congr., Java, p. 490, 19.30 (Japan).— Fang and Wang, Contr. Biol. Lab. Sci. 

 Soc. China, vol. 8. p. 229, fig. 6, 1932 (Chefoo).— Tanaka, Jap. Fish. Life 

 Colours, No. 13, 1933.— Wang, Contr. Biol. Lab. Sci. Soc. China, vol. 9, p. 91, 



1933 (Chusan).^ — Whitley, Mem. Queensland Mus., vol. 10, pt. 4, p. 199, 



1934 (reference). 



Triads scyllium Gxjnther, Cat. Fishes British Mus.. vol. 8, p. .384, 1870 (com- 

 piled). — IsHiKAWA and Matsitura. Prelim. Cat. Fishes Mus. Tokyo, p. 

 62, 1897. 



Triacis semifasn'nfa (not Girard) Gunther, Ann. Mag. Nat. Hist., ser. 4, vol. 

 13, p. 154, 1874 (Chefoo). 



Depth 6% to 7% to subcaudal lobe origin; head 41/2 to ^%, width 

 IV2 to 1%. Snout 21/2 to 23/r, in head, rounded, obtuse; eye 5% to 

 6^^, 2l^ to 21/2 in snout, 234 to 3 in interorbital, depth % its length; 

 dentary width 2% to 3 in head, length % its width, labial grooves 

 deep on each jaw, upper slightly longer and both slightly less than 

 half of each jaw; teeth in 40 rows above, 36 rows below, each with 

 narrow median triangular cusp and 1 or 2 small basal cusps each 

 side, edges entire; nostrils at last third in preoral, front valve wide, 

 its width 1% in internarial space; interorbital 21/5 to 21/3 in head, 

 broad, little convex. Gill openings with second to fourth subequally 



