PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 387 



jecting and pointed; the pectorals broadly expanded on each side, leav- 

 ing a marked concavity in the outline of the body along* their anterior 

 margins on each side, in front of which is a convexity which terminates 

 in the mucronate snout. 



Mouth small; teeth triangular, rather pointed; nostrils well apart, 

 confluent with the mouth ; a broad flap behind and between them, which 

 seems to form an upper lip. 



Color brownish olive, beautifully marbled with grayish, and marked 

 with roundish stellate spots and finer markings of dark brown; edge of 

 disk with rounded pale spots, forming semicircles on the border; tail 

 with four dark blotches above, forming half-rings. 



TORPEDINIDiE. 

 Genus TOEPEDO Dmneril. 



112. Torpedo occidentalis Storer. 



Eecorded as rare, by Dr. Yarrow, on the authority of fishermen. 



RAIID^E. 

 Genus RAIA Linnaeus. 



113. Raia laevis Mitch. 



Eecorded by Dr. Yarrow as common. 



CARCHARIIDiE. 

 Genus CAECHAEIAS Eafinesque. 



(Odontaspis Agassiz ; Eugomphodus Gill.) 



114. Carcharias americanus (Mitch.) Jor. & Gilb. 



(Engomphodus littordlis Gill, op. cit.) 

 One pair of jaws seen. The name Carcliar ias has priority over Odont- 

 asjjis, as Dr. Gill has shown, and our species seems hardly generically 

 distinct from the European. 



SPHYRNIDiE. 

 Genus SPHYENA Eafinesque. 



115. Sphyrna zygaena (Linn.) Mull. & Henle. 



A single specimen recorded by Dr. Yarrow. 



Genus EENICEPS Gill. 



116. Reniceps tiburo (Linn.) Gill. — Shovel-headed Shark ; Bonnet-head. 

 Abundant. 



