66 FAUNA HAWAIIENSIS 



Mesothorax dull in the c/, generally somewhat shining in the ?, distinctly and 

 closely, but not coarsely, punctured. Propodeum somewhat smooth, with very 

 obscure traces of puncturation. Basal segment of the abdomen finely and not very 

 closely punctured ; second hardly raised from the base ; beneath, with the costae very 

 short, although rather strong, much shorter than the tumid and strongly developed 

 basal portion of the segment, beyond the costae somewhat flat, and with no evident 

 depression. 



Hab. Mountains of Kauai ; not rare. 



(7 I ) Odynerus cephalostictus, sp. nov. 



Niger, alis infuscatis, caeruleo-iridescentibus, fronte flavo-notata, abdominis seg- 

 mento primo rufescente, secundi lateribus rufo-maculatis. Clypeus fortiter emarginatus. 

 Mesonotum minus nitidum, inaequaliter subtiliterque punctatum. Propodeum opacum 

 subobsolete rugoso-punctatum. Abdominis segmentum 2 ventrale depressione levis- 

 sima, male definita. ?. Long. 9 — 9-5 mm. 



Female black, with a small median flavous spot behind the antennae, the basal 

 segment of the abdomen mostly red, the second red at the sides near the base. 

 Wings infuscate and with blue iridescence. Apex of clypeus deeply emarginate ; 

 head above the antennae not very densely punctured. Mesothorax somewhat shining, 

 with fine shallow and irregular puncturation ; between these punctures the surface is 

 very densely and minutely punctured. Propodeum dull, with rugose and almost 

 obsolete puncturation. Basal segment of the abdomen vertical in front, and shallowly 

 punctured ; second slightly raised from the base ; beneath, with the depression very 

 shallow and more or less vague, the segment even at the sides hardly raised from 

 the apices of the costae. 



Hab. Mountains of Molokai ; rare, 3 ? taken between June and September, 

 1893, at an elevation of 3000 ft. 



(72) Odynerns axestes, sp. nov. 



Niger, fronte flavo-notata, mandibulis plus minusve rufis, abdominis segmento 

 primo et secundo lateribus obscure rufescentibus, alis infuscatis, caeruleo-irides- 

 centibus. Clypeus fortiter emarginatus. Mesonotum peropacum, inaequaliter leviter 

 punctatum, propodei concavitate rugosa. Abdominis segmentum secundum longi- 

 tudinaliter convexum, subtus depressione levissima. </. Long. 9 mm. 



Black, with a median flavous spot behind the antennae, the mandibles more or 

 less red, and the two basal segments of the abdomen obscurely reddish at the sides, 

 the second for the most part red also beneath. Wings infuscate, with a blue 



