318 bulletin: museum of comparative zoology. 



The body of the specimen is very narrow and elongate, 65 mm. in 

 length, and only 5 mm. broad. 



Whether this represents one of the two species (P. biolleyi, P. 

 nicaraguensis and its variety isthmicola) known from Central America, 

 or represents a new form, must await the acquisition of additional 

 specimens. 



