URANIDEA 329 



differ from that species chiefly in the presence of prickles in the axils 

 — evidently a variable character as shown by our collections — and 

 in the height of the first dorsal, which is f the length of the head (^ 

 the head in specimens of U. gracilis examined). It appears not 

 impossible that the present form should be regarded as a variety of 

 gracilis. 



