Jordan and Evcrimxnn. — Fishes of North yhnen'ra. 41 



fold on each jaw ; toeth small, ^^, erect, rather slenderer in lower jaw ; 

 only the upper teeth show serration near the tip. Pectorals very laro-e 

 and broad, extending beyond dorsal, which begins above root of pectoral. 

 Second dorsal and anal sub-equal, only \ size of first dorsal. Eye small, 

 gill openings moderate. (Gliuther.) Surinam. ( of ijr, sharp; pry^w, snout.) 



Carcharias orijrhijnrhus, MuLLER & IIenle, Plas'iostomcn, 41, 18:!8, Surinam. 

 Carchimaf> o.ryylii/nchm, GuNTiiEii, Cat.,viii, 375, 1870. 



26. HYPOPRION, Miiller &. Henle. 



HiipopHon, Mi'LLER & Henle, Plagii)Stomen, 34, 1838, (nindoti). 



Hypojntonodnii, GiLL, Ann. Lye. Nat. Hist. N. Y., 18G1, 4iil, (hnnUidon) (toeth sorrato on outer side 

 only). 



Characters essentially as in Carcharhitms, but with the lower teeth entire, 

 the upper teeth coarsely serrated at base only, on one or both sides ; lower 

 teeth erect, (vko, below; irpiuv, saw ; the upper teeth being serrated at 

 base). 



a. Snout obtuso ; its length from mouth J^ interorbital width ; upper teeth weiikly scrrato 

 on both sides in adult; second dorsal very large, more than 3'2 base of first. 



DREVIROSTRIS, t)5, 



aa. Snout acute ; its length from mouth IJ-^ times width of mouth ; upper teeth strongly 

 serrate on both sides ; second dorsal small, about ]^ .as long as first. sigxatus, Cfi. 



55. HTPOPRION BREVIROSTUIS, Poey. 

 Body robust; head flattened, the snout short, flat, broadly rounded; 

 nostril midway between tip of snout and posterior edge of pupil; preoral 

 part of snout half interorbital width ; width of mouth equal to distance 

 from tip of snout to posterior margin of orbit; fold at angle of mouth 

 half orbit ; ujiper teeth broadly triangular, the base finely serrate on outer 

 edge only in young, on both sides in adult; lower teeth erect. Eye small. 

 Second dorsal unusually large, similar to first and nearly as high. Inter- 

 space between dorsals 2J times base of first, 2\ times second ; anal about 

 f size of second dorsal ; pectorals moderate, broad, nearly reaching 

 middle of first dorsal. Gray, fins dusky in young, inside of mouth 

 brilliant white. L. 7 feet. West Indies, north to Charleston, not rare at 

 Key West, where it frequents the wharves with its more dangerous rela- 

 tive, Carcharhinus lamia, {hrevirostris, short-nosed.) 



Uypoprion hrevirnstris, Poey, Repertorio, ir, 4.'51, tab. 4, 1808, Cuba ; Jorhan & Gilisert, Proc. 

 U. S. Nat. Mus., 1882, 581; Jordan, I. c, 1884, 104. 



56. HYPOPRION SIGNATUS,* Poey. 

 Snout long, acute, the preoral length 1^ times width of mouth ; nostrils 

 with a short, acute lobe; pectoral acute, not falciform; second dorsal op- 

 posite anal, neither \ base of first dorsal; upper teeth strongly serrate 

 at base, the claw sharp and nearly erect. Cuba. (Poey, description of 

 lonr/irostris.) (signatus, marked.) 



ITi/pnprion signatu/s, Poey, Synopsis, 452, 18G8, Cuba ; Poey, Enumeratio, 199, 187.5. 

 Hypoprion longirostris, PoEY, Enumeratio, 199, 1875, Cuba. 



* Poey has given names to 2 species of Ilypoprinn vith the snout long, thi^ 2 differing only 

 in form" of the teeth. These aro /oiii/iiwdis, described as above, and .s/./dk/k-s known fioni the 

 teeth only. The upper teeth of .t/ymihis, according to Poey, luivo the claw triangular and 

 bluntish, the lower teeth bluntish.'not flexuou.s, and somewhat oblique. Probably the 2 are 

 not different species, and sigyiatits is the older name. 



