346 Th e Philippine Journal of Science 1923 



specimens in the United States National Museum I was unable 

 to find any other characters which might be considered of generic 

 value and, although I doubt the advisability of considering such 



differences in the antennas as generic, it seems undesirable at 

 the present to suppress the name Eniaca. Until more material 

 of this group can be studied I suggest that Eniaca be treated 

 as a genus and distinguished from its ally Dirhinus as follows: 



Third antennal joint at least twice as wide as long, not sharply separated 



from fourth Dirhinus Dalman. 



Third antennal joint longer than wide, easily seen, and separated from 



f <> ur th Eniaca Kirby. 



Key to Philippine species of Dirhinus in collection of the United States 

 National Museum 



1. Scutellum with uniform umbilicate punctures; antennae and four anterior 



le ? s r €d „.. D. auratus Ashmead. 



Central portion of scutellum smooth and shining 2. 



2. Pronotum uniformly closely punctured; seen from above the horns of head 



have a small tooth apically; four anterior legs piceous. 



