64 PROCEEDINGS OF THE ACADEMY OF [April, 



depression down back and another down postventral and postanal 

 regions, greatest depth about origin of dorsal. Caudal peduncle com- 

 pressed, and its least depth about 1| in its length. 



Head rather well depressed, profiles similar apparently. Snout well 

 depressed, rather short, when viewed above broadly convex, and its 

 length to front of mouth about f its width at that point. Eye small, 

 elongately ellipsoid, and its center about first f in head. Nictitating 

 membrane rather broad. In profile end of mandible a little l^efore front 

 rim of eye, as seen from below profile of symphysis rather broadly convex 

 in front, and its length f its width. No grooves at corners of mouth. 

 Teeth about ff?, similar in both jaw^s, without basal cusps, edges 

 entire, slender, compressed, of rather uniform size and sharply pointed. 

 Nostrils large, lateral, below on snout near last third of its length. 

 Interorbital space broadly convex. 



Gill-openings 5, second and third deepest or about 5 in head, and last 

 two over base of pectoral. No spiracle. 



Body covered with very fine shagreen, scarcely rough to touch. 



Origin of first dorsal about midway between tip of snout and tip of 

 posterior depressed point of second dorsal, and posterior point 2|- in 

 length of fin. Origin of second dorsal about an eye-diameter nearer 

 that of upper caudal lobe than posterior basal margin of first doi-sal, 

 and posterior point of fin 2f in its front margin. Caudal rather small, 

 upper lobe begins a trifle behind lower, and its length about 3f in rest 

 of body. A pit on caudal peduncle, both above and below, at origins 

 of caudal lobes. Anal begins very slightly behind origin of second 

 dorsal, and fin reaching H to origin of lower caudal lobe, tip of posterior 

 process not extending back bej^ond that of end of fin in front. Pectoral 

 broad, inserted rather low, and when depressed reaching about opposite 

 origin of first dorsal, its greatest width If in its length. Ventral 

 broad, its origin slightly behind tip of depressed dorsal, and depresserl 

 fin reaching If to anal. Claspers small. 



Color of dried skin dull brown generally, lower surface scarcely paler. 

 Fins all unicolor. 



Length about 20f inches. 



Type No. 34,634, A. N. S. P. No data, but probably from the 

 Indian Ocean? 



This interesting specimen is probably identical with Day's figure of 

 Carcharias ellioti}^ His description, however, differs in the outer 

 labial groove, serrated teeth with basal cusps, first dorsal beginning 



' Fishes of India, IV, 1880, p. 716, PL 189, fig, 



2 



