76 REPORT OF NEW JERSEY STATE MUSEUM. 



Genus Urolophus Miiller and Henle. 



The Round Sting Rays. 

 Urolophus jamaicensis (Cuvier). 



Membranous flap from above upper posterior portion of orbit 

 forms broad cover for spiracle, quite as large as spiracle, rounded 

 above and produced in an acute angle extending behind opening. 

 Spiracular opening an elongate slot, and valve well developed. 

 Very light olivaceous freckled with brown. Posterior half of tail 

 obscurely ringed with brown and lighter color. Length 5 inches. 

 New Jersey. ( Garman. ) 



Known from our coast by the above described foetus, No. 

 8,184, United States National Museum. 



Urolophus torpedinus Garman, Proc. U. S. Nat. Mus., VIII, 

 1885, p. 41. 



Genus Dasybatus Walbaum. 



The Sting Rays. 



Key to the species. 



a. Tail with wing-like expansion below only; adult with stout bucklers on 

 back and tail; tail rough, more than twice length of disk. centroura 



aa. Tail with narrow keel or expansion both above and below. 



h. Tail with wing-like expansion below, simply keeled above; 3 series 



of tubercles on shoulder. hasTata 



hh. Tail with wing-like expansion above and below, latter larger; skin 



nearly or quite smooth in adult. say 



Dasybatus centroura (Mitchill). 



Stingaree. Sting Ray. Devil Fish. Pigeon Sting Ray. 



Distinguished from all our other species by the presence of a 



keel or wing-like expansion on the lower surface of the tail only. 



This is the common species about Cape May. Some stings are 



