28 NEAV YORK STATE MUSEUM 



This shark was reported at Woods Hole Mass., in 1871 by Prof^ 

 Baird. Dr Smith records four examples, each about 4 feet long^ 

 from a trap near Woods Hole, Aug. 8, 1873, since which time 

 none have been observed. 



The species feeds chiefly on fish. 



Genus apriojvgdoiv Gill 



Snout conical, more or less produced; teeth not serrated, nar- 

 row, on a broad base, erect in both jaws or sometimes slightly 

 oblique in the upper; dorsal over the interspace between pec- 

 torals and ventrals. 



11 Aprionodon isodon (Val. in Miiller & Henle) 



Tiburon 



Carcharias isodon Valenciennes in Muller & Henle, Plagiostamen, 32^ 



1841. 

 Carcharias (Aprionodon) isodon Dumekil, Elasmobrauches, 349, 1870. 

 Aprionodon punctatus Jordan & Gilbert, Bull. 16, U. S. Nat. Mus. 24, 1883. 

 Carcharias punctatus Gunther, Cat. Fisb. Brit. Mus. VIII, 361, 1870. 

 Aprionodon isodon Poey, Enum. Pise. Cubens. 200, 1875; Jordan & Eveb- 



MANN, Bull. 47, U. S. Nat. Mus. 42, 1896. 



Snout short, compressed, and rounded; nostril one third of 

 the distance from tip of snout to angle of mouth, nearly as 

 large as the eye; the distance between the nostrils equals that 

 from tip of snout to mouth; teeth in upper jaw small, on a broad 

 base, without serrations, those of lower jaw similar but smaller, 

 a small median tooth as usual; number of teeth fl; first dorsal 

 much higher and longer than the second and is separated from 

 the last gill opening by a space equal to two thirds the length 

 of its base; pectorals reach to below end of first dorsal; caudal 

 pit very apparent, specially below; scales rounded posteriorly, 

 with five keels; color above dark gray (greenish brown, Dum^ril), 

 whitish below. 



The species is recorded from New York, Virginia, and Cuba. 

 The type specimen in the Mus^e d'Histoire Naturelle, Paris, is O. 

 65m ;= 25f inches long. The following measurements from the 

 type are giAen by Miiller and Henle. 



