"""isgi!^'] PKOCP^EDINGS OF THE NATIONAL MUSEUM. 543 



First dorsal small, narrow, and high, extending but little beyond ven- 

 trals. The length of its base Is contained li times in the interspace 

 between dorsals. Second dorsal slightly larger than first and extend- 

 ing a little beyond the base of anal. When depressed it reaches beyond 

 origin of caudal. 



Anal very long, a short grooved channel behind ventrals reaching its 

 base, as do also the tips of the ventrals themselves. The length of its 

 base is 2i times that of first dorsal, and the basal i)ortion of fin is con- 

 tinuous with the fold which rises to form the lower caudal lobe. Cau- 

 dal fin 3'j} in total length, its terminal lobe but little more than one-sixth 

 its length. 



Head, body, and fins uniformly covered with minute close-set plates, 

 each of which is triangular and furnished with three subequal spinous 

 points. These are wanting on the posterior third of the npper face of 

 the pectoral, and on the free edges of all the fins. No modified plates 

 on the up])or edge of the caudal. 



Color uniform warm brown above and below, the snout and the mar- 

 gins of the fins blackish. 



The only specimen secured is a female 50 centimetres long, and con- 

 tains a pair of fully developed eggs, the cases showing a peculiar con- 

 striction towards each end. 



5. Eulamia (Platypodon) platyrhyiichus sp. uov. 



Carchariaa sp. incog. Jordan and Gilbert, Procs. U. S. Nat. Mus., 1882, 107 



(description of jaw only). 

 Eulamia lamiella Jordan and Bollman, Procs. U. S. Nat. Mus. (not of Jordan 



and Gilbert). 



Snout very flat and broadly rounded, of moderate length, its preoral 

 portion slightly longer than width of mouth, and less than width of 

 snout ojtijosite nostrils. Middle of nostrils midway between front of 

 mouth and tip of snout. Nostril flap without sharp lobe. No labial 

 folds, the angle of mouth with two short creases. 



Teeth in ui)por jaw broadly triangular and coarsely serrate, the inner 

 edge oblique, the outer definitely notched in most cases, merely concave 

 in others, the two kinds found together in the same jaw. The serra3 

 are coarsest below notch on outer side of tooth. Lower teeth narrow, 

 erect, serrulate. 



Eye moderate, three-fourth width of gill-openings. Interorbital 

 width greater than length of snout in front of eye by a distance equal- 

 ing the diameter of the orbit. 



Pectorals but little falcate, long, reaching beyond the base of first 

 dorsal. The inner margin is two-sevenths length of the outer, and the 

 greatest width is half the length. 



First dorsal inserted close behind pectorals, its distance from root of 

 pectorals two-fifth its base, the fin much nearer pectorals than ventrals. 

 Its base is two fifths the length of interspace between dorsals, and is 

 less than its height, which is less than the depth of body. 



