HYMENOPTERA OF THE HAWAIIAN ISLANDS. 219 



in^ of the vrings, the smooth metathorax, and the form of 

 the first segment of the hind body (which in O. montanus 

 is subvertical in front). 



I have taken this fine species in several localities on 

 Oahu. It does not seem to be confined to the moun- 

 tains. 



30. Odynerus pacificus. 



O.pacificus, sp. nov. Parum nitidus_, punctatus, subtiliter 

 pubescens, niger ; abdomine antice rufo ; alis fuscis, 

 obscure violaceis ; clypeo antice fortius emarginato ; 

 abdominis segmento primo transverso, antice verti- 

 cal. 



Long. J" ? II millim. 



Scarcely shining^ the clypeus quite strongly emargi- 

 nate. The head and thorax rather roughly and closelv 

 punctured, the punctures large, confused, and faintly 

 impressed. The punctuation of the hind body resembles 

 that of the preceding species ; the basal segment is en- 

 tirely red above, but obscured with black beneath ; the 

 second segment is entirely red beneath, but on the upper 

 surface it is black at the base, and (in some specimens) 

 more or less obscure or blackish at the apex ; the remain- 

 ing segments are blackish. In two of my specimens the 

 apex of the clypeus is reddish. The apical joint of the 

 antennse in the male is testaceous. The wings have 

 scarcely any violet iridescence. This is not closely allied 

 to any other species I have seen. I have taken it singly 

 on Maui and Hawaii. 



3 1 . Odynerus ruhro-pustulatus. 



O. rubro-pustulatus , sp. nov. Nitidus, punctatus, parura 

 pubesfcns, niger ; abdomine rubro-maculato ; alis 



