184 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



lobe. Gill openings large, last above pectoral. Spiracle small, less 

 than eye diameter behind eye. 



Scales small, tricarinate or quadricarinate. Lateral line incon- 

 spicuous. 



First dorsal nearer pectoral than ventral, high as long, emarginate, 

 apex rounded acutely, posteriorly very acute; second dorsal before 

 anal, similar though shorter than first dorsal ; anal shorter and lower 

 than second dorsal, 2 in space to subcaudal ; caudal 4% in total length, 

 acute, emarginate; pectoral shorter than head, width less twice its 

 length, emarginate, acute; ventral twice shorter than pectoral, clasp- 

 ers conic, longer than ventrals, with 3 or 4 valves. 



Gray above, below whitish. Fins gray or bluish gray, partly with 

 white edges. Length, 690 mm. (Bleeker.) 



Singapore, East Indies, Indochina. 



HEMIGALEIUS BALFOURI Day 



Hemigaleus Mlfouri Day, Fishes of India, pt. 4, p. 717, pi. 135, fig. 4, 1878 (type 

 locality: Waltair, Coromandel coast) ; Fauna British India, Fishes, vol. 1, 

 p. 18, fig. 2, 1889.— Gaeman, Mem. Mus. Comp. Zool., vol. 36, p. 152, 1913 

 (Coromandel coast). 



Depth 71/^ to subcaudal origin; head 5%, width about 1%. Snout 

 21^ in head ; eye 7, 3 in snout, about 4 in interorbital ; mouth long as 

 wide, 3 in head, labial folds at each mouth angle, not over one-third 

 to symphysis, subequal; teeth in 24 rows in jaws, upper notched or 

 with about 3 denticles along outer side of base, slightly smaller lower 

 erect and smooth; nostrils little nearer mouth than snout end, inter- 

 narial 2i/^ in preoral, which 2% in head. Gill openings at least twice 

 width of orbit, gradually closer to last, last 2 above pectoral base. 



Front edge of first dorsal 1% in head; second dorsal length 1%; 

 anal length 2, origin opposite second dorsal origin; pectoral li/4 in 

 head, width 1% its length, which half way to ventral ; ventral length 

 1%, clasper slender ; caudal 4 in rest of body, subcaudal 21^ in caudal. 



Dark brown, fins gray, second dorsal with dark summit. Length, 

 826 mm. (Day.) 



India. 



Subgenus Hemigaleus Bleeker 



HEMIGALEUS MICROSTOMA Bleeker 



Hemigaleus microstoma Bleekee, Verh. Batav. Genootsch. (Plagiost.), vol. 24, 

 p. 46, pi. 2, fig., 1852 (head) (type locality: Batavia) ; Act. Soc. Sci. Ind.- 

 N^erl., No. 7, vol. 2, p. 9, 1857 (Amboina) ; Versl. Meded. Akad. Wet. Am- 

 sterdam, vol. 12, p. 30, 1861 (Singapore). — Dum£:ril, Hist. Nat. Elasmobr., 

 vol. 1, p. 392, 1865 (Batavia).— Gtjntheb, Cat. Fish. Brit. Mus., vol. 8, p. 

 375, 1870 (type).— Bartlett, Sarawak Gazette, vol. 26, no. 366, p. 133, 1896 

 (Moratabas). — Gabman, Mem. Mus. Comp. Zool., vol. 36, p. 151, 1913 

 (Java). — Weber, Sihoga Exped., Fische, vol. 57, p. 591, 1913 (Sapeh 

 Straits).— Fowler, Proc. 4th (1929) Pacific Sci. Congr., Java, p. 490, 1930 

 (reference) ; List Pish. Malaya, p. 10, 1938 (reference). 



