ON THE EAST COAST OF FLORIDA. 25 





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Illustration. Page. 



8. "DASYATIS SAY." 36 86 



ray; " Disk quadrangular, one-sixth wider than 



Sting Ray ; long ; anterior margins nearly straight ; pos- 



Southern Sting Ray ; i ex \ ox an( j inner borders convex ; outer and 



Sting aree. . , , , , , 



posterior angles rounded ; snout not protrud- 

 ing beyond the lines of the margins ; ventrals rounded j tail 

 strong, rather more than lj4 times the length of the disk, with 

 a strong serrated spine, bearing a short, low, cutaneous expansion be- 

 hind the spine on the upper side, and a longer, little wider one below, 

 ending nearly opposite ; upper jaw undulated ; lower prominent in 

 the middle ; teeth small, smooth in young and females, sharp in 

 adult males ; 3 papillae at the bottom of the mouth, and 1 at 

 each side ; body and tail smooth. Color olive brown in adult, red- 

 dish or yellowish in young ; lower surface whitish. Closely resem- 

 bles the European species, D. pastinaca. In D. say, the anterior 

 margins form a more blunt angle at the end of the snout, which is 

 less prominent at the apex, the outer and posterior extremities of the 

 pectorals are rounder, the posterior margins are more convex, the 

 disk is broader toward the ventrals, and the tail is longer ; in D. 

 pastinaca, the lateral and hinder angles of the pectorals and the 

 lateral angle of the ventrals are marked by blunted corners ; a single 



