THE FISHES OF NEW JERSEY. 79 



Genus Myi^iobatis Dumeril. 

 The Eagle Rays. 



Myliobatis freminvillii Le Sueur. 



Stingaree. 



This may be known from the next species by the entire muzzle. 



This is only known positively from our coast by the record of 

 Dr. Bean from an example from near Longport. 



Myliobatis freminvillii Bean, Bull. U. S. F. Com., VII, 1887, 

 p. 151. 



Genus Rhinoptera Kuhl. 

 The Cow Nosed Rays. 



Rhinoptera bonasus (Mitchill). 



Cow Fish. Cow Nosed Ray. 



Body rhomboidal, gibbous on middle of back. Below flat. 

 Head distinct, sloping, grooved longitudinally above, and neck 

 with several protruberances. Inferior lobes of middle of nose 

 rather longer than others, superior ones obtuse and roundish. 

 Eyes lateral, vertical, equidistant from spiracles and tip of super- 

 ior lobes, and pupil very small. Mouth wide, with several rows 

 of flat wide teeth of different dimensions, central ones largest, 

 and lateral ones diminishing towards angles of mouth, those of 

 each row but a moiety of preceding ones. Jaws applied to each 

 other by a transverse obtuse elevation in middle. Nostrils equi- 

 distant from tip and middle of nose, which is flat, a little dilated, 

 truncate, denticulated, covering superior jaw, and lateral fold 

 continued a short distance below angles of jaw. Gill-openings 

 oblique behind mouth, gradually decreasing in breadth to terminal 

 one, which is small and more distant. Spiracle large. Tail at- 

 tenuated, very slender, a little longer than body, and with a small 

 triangular fin at base preceding serrated spine. Ventral narrow, 

 a little elongated and obliquely truncated. Color above brown- 



