156 



A. hrevirostrum, Lesueur, Trans. Am. Phil. Soc. I, p. 

 DeKay, New York Fauna, Fishes, p. 345. 

 Inhabits the Potomac River. 

 S. I. 



LXI-MYLIOBATIDJE. 



iETOBATIS, Mull. & Henle. 



A. narinari. 



Form of head, body and tail very much like that of mylio- 

 hatis; smooth. The dorsal fin situated between the ventrals. 

 The nasal valves separate, each forming a long flap. Teeth 

 flat, broad, forming a single series; teeth of the lower jaw 

 sometimes angularly bent, sometimes nearly straight. The 

 very long tail with four or five spines. Disk generally with 

 numerous round, bluish- white spots. 



A, narinari, Muller & Heole, p. 179; Gueather, VIII, p. 

 492. 



Goniolates Jlarjellum, Agass. Proc. Boston Soc. Nat. Hist. 

 VI, p. 385. 



Enters Chesapeake Bay from the ocean, and is caught in 

 seines near Norfolk, Va. 



S. I. 



RHINOPTEEA, Kuhl. 



R. quadriloba. 



Cow-Nosed Ray. 



Body rhomboidal, elevated along the dorsal line. Pecto- 

 rals acute. Tail slender, longer than the body. Muzzle 

 divided into two short lobes, under which are two similar 

 ones. Head distinctly projecting from the pectorals. Teeth 

 broad and flat. Olive-brown above, beneath white. Width 

 two feet. 



B. quadriloba, Guenther, VIII, p. 494. 



Baja honasus, Mitch. Trans. Lit. & Phil. Soc. New York, 

 1, 1815, p. 479. 



— quadriloba, Lesueur. Journ. Ac. Nat. Sc. Philad. I, p. 

 44. 



Bliinoptera quadriloba, Cuv. Regue Anim.; DeKay, New 

 York Fauna, Fishes, p. 375, pi. 66, fig. 217. 



In the drains of the ocean at the entrance to Sinepuxent 

 Bay, and near the taouth of the ChesaDeake Bay. 



AcAP, Coll. \ 



