160 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



1931 (reference) ; vol. 11, no. 6, p. 384, 1934 (Solomons; Ellice Islands) ; 



Bull. Amer. Mus. Nat. Hist, vol. 70, pt. 1, p. 52, 1936 (Hawaii; Polynesia) ; 



List Fish. Malaya, p. 9, 1938 (reference). 

 Eulamia melanoptera Fowlicr, Proc. 4tli (1929) Pacific Sci. Congr., Java, p. 492, 



1930 (Solomons, Kingsmills, Japan, Guam, Palmyra, Paumotus, Thornton 



Island, Hawaii). 

 Garcharias (Prionodon) henlei (not Valenciennes) Blej;kee, Nat. Tijds. Neder- 



land. Indie, vol. 4, p. 507, 1853 (Batavia, Java). 

 Carcharias {Prixmodon) hrachyrhynchos Bleekeb, Act. Soc. Sci. Indo-N6erland., 



(Enumerat.), vol. 6, p. 206, 1859.— DuMf:RiL, Hist. Nat. Elasmobr., vol. 1, p. 



364, 1865 (compiled). 

 Carcharias elegans (Ehrenberg) Klttnzinqeb, Verh. zool.-bot. Ges. Wien, vol. 21, 



p. 658, 1871 (name in synonymy). — Hilgendobf, Symbol. Physic. Hem- 



prich -Ehrenberg, p. 7, pi. 4, fig. 2, 1899 (type locality: Red Sea). 

 Carcharias hemiodon (part) Macleay, Proc. Linn. Soc. New South Wales, vol. 



2, p. 366, 1878 (Port Darwin ; " a large one with the tips of all the fins quite 



black"). 



Depth 5 to 5% to subcaudal origin; head 3% to Z%, width I14 to 

 1%. Snout 2% to 2y2 in head, broadly rounded as viewed above; 

 eye 714 to 134^, 3 to 5 in snout, 4% to 8 in interorbital ; orbit with 

 depth 114 to 1% its length ; dentary width 2l^ to 2% in head, labial 

 grooves very short or simply as very short rudimentary fold just 

 above angle; teeth in about 26 to 28 rows in jaws, bases broad, upper 

 cusps broadly triangular with ends slightly attenuated, inner edge 

 obliquely straight and outer deeply notched ; lower cusps more erect, 

 narrower, edges nearly or quite smooth in young; teeth all more 

 or less finely serrate with age; nostrils slightly nearer snout tip than 

 mouth, width of aperture 3% in internarial, front valve broad and 

 obtuse flap with short point; interorbital 1% to 2 in head, broad, 

 slightly convex. Gill openings 5, equidistant, subequal, last 2 above 

 pectoral base. 



Scales very small, tridentate, with 3 to 5 keels. 



First dorsal origin opposite inner end of depressed pectoral angle, 

 front edge I14 to 1% in head; second dorsal origin opposite anal 

 origin, variably slightly forward or backward, front edge 2% to 4% 

 in head; anal origin nearer subcaudal origin than that of ventral, 

 front edge 3 to 4 in head ; subcaudal front edge 1% to 1%, ll^ to 1% 

 in its own length ; least depth of caudal peduncle 4% to 5% in head ; 

 pectoral 1 to IVs, width 1% to 1% in its length; ventral length 1% 

 in head; claspers short and slender, none quite reaching hind ven- 

 tral ends. 



Back fawn to warm brown, under surfaces white. First dorsal 

 with large black apical blotch, smaller one at apex of second dorsal. 

 Anal with black blotch. Subcaudal lobe black apically and fin other- 

 wise narrowly edged blackish. Pectoral with black apical blotch. 

 Margin of ventral rather narrowly blackish apically. In small ex- 



