183 



ROUND-WINGED TRYGON. 



Tryrjmi strogylopterus. 



PLATE XXII. 



Raya pintada. Schomh. Draiviiiffs, No. 70. 



*' Taken in the Rio Branco in April," is all the in- 

 formation we possess in regard to this curious spe- 

 cies. It is remarkable for its rounded form, the 

 diameter taken either way being nearly equal ; the 

 tail also only nearly equals about a third of the 

 diameter, and, thick at its insertion, becomes rather 

 suddenly attenuated, and is slender to the tip, which 

 is armed at a short distance from its extremity with 

 a single serrated spine. The colour is a yellowish 

 umber-brown, with a narrow border of dull reddish 

 browTi ; the whole surface covered over with irre- 

 gular markings and freckles of dark umber-brown. 



