262 Storcr's Synopsis of the Fishes of North America. 



prey with the wings extended, and has caused them to be compared to the 



eagle. Their jaws are furnished with broad, flat teeth, arranged like the 



squares of a pavement, and of different proportions, according to the species ; 



their tail, extremely long, is terminated in a point, and is armed, like that of 



Trygon, with a strong spine, serrated on both sides, and has above, towards 



its base, in front of the spine, a small dorsal. Sometimes there are two or 



more spines. 



1. Myliobatis Freminvillii, Lesueur. 



Body rhomboidal. Above olivaceous, more or less deep in different specimens, paler on the 

 margins, and sprinkled with distinct rounded spots ; beneath white. Orbit salient, sur- 

 mounted by an eminence. A r entrals rounded. Tail very long, filiform, triangular. 



Length, 2 feet. Width, 2 to 3 feet. 



Rhode Island, Lesueur. 



Myliobatis: Freminvillii, Lesuefr, Journ. Acad. Nat. Sc, iv. p. 111. 

 " " Dekav's Report, p. 366. 



2. Myliobatis Say, Lesueur. 



Suborbicular. Olivaceous red above. Teeth dilated, and rhomboidal at the base. Two 



elongated vertical opposite fins on the tail, behind the spine. 



Length, ('). Width, 17 inches. 



New Jersey, Lesueur. 



Myliobatis Say, LEsrErn, Journ. Acad. Nat. Sc, i. p 42, pi. 

 " " Dekay's Report, p. 376. 



3. Myliobatis acuta, Atres. 



Head rounded anteriorly, and extending backwards, widening but little for several inches, 

 until opposite the eyes, where it joins the body. Body above smooth, entirely destitute of 

 spines. AVhole body and head above reddish brown ; tail lighter at the base, but nearly 

 black towards the tip ; beneath whitish. Tail very slender, smooth to the tip, bearing two 

 reversely serrated spines. 



Length, 3 feet, II inches. 



Massachusetts, Storer. Connecticut, Ayres. 



Myliobatis bispinosus, Storer, Proceed. Bost Soc. Nat. Hist., p. 53. 



" " " Bost. Journ. Nat. Hist., IV. p. 187. 



Myliobatis acuta, Atres, Proceed. Bost. Soc. Nat. Hist., p. 65. 



Myliohatis bispinosus (Storer), Ayres, Bost. Journ. Nat. Hist., IV. p. 200, pi. 13, fig. 1. 

 Myliobatis acuta (Ayres), Linsley's Cat. of Fishes of Connecticut, Silliman's Journal. 



In the year 1810, Dr. Yale sent me the tail and a portion of a jaw of this species, and 

 from these I named it M. bispinosus in the fourth volume of the " Boston Journal of Natural 



