I KANIDEA 329 



that our specimens differ from thai species chiefly in the pres- 

 ence of prickles in the axils — evidently a variable character as 



shown by our collections — and in the height of the first dorsal, 

 which is 3 4 the length of the head i}/i the head in specimens of 

 U. gracilis examined). It appears not impossible that the pres- 

 ent form should be regarded as a variety of gracilis. 



—30 F 



