222 MESSRS. T. BLACKBURN AND P. CAMERON ON THB 



33. Odynerus diver sus. 



O. diversus, sp. nov. (^ . Subnitidus, crasse punctatus, 

 niger^ rufo-maculatus ; alls hyalinis, harura nervulis 

 et parte anteriori nigro-fuscis ; clypeo antice fortiter 

 emarginato; abdomine dense fusco pubescente, seg- 

 mente primo fortiter transverso, antice hand verticali, 

 secundo vix tuberculato-elevato. 



5 . Clypeo vix emarginato. 



Long. 12-14 millira. 



Black, with tlie following parts red, viz. : — A spot behind 

 the base of the antennae, the greater portion of the pro- 

 thorax, some spots on the tegulae and a spot below them, 

 some spots on the scutellum and postscutellum, the hind 

 margin of the basal segment of the hind body, the hind 

 margin of the second segment and an oblique spot on each 

 side of the same, and the hind margin of the third seg- 

 ment. The head is closely and coarsely punctured ; the 

 thorax has a double system of punctuation, the smaller 

 punctures not very close, the larger very coarse ; the 

 metathorax is coarsely punctured, but scarcely rugose ; the 

 hind body is sparingly punctured, the punctures obscure 

 and lightly impressed, but becoming stronger in the apical 

 half, the basal segment very strongly transverse, and not 

 at all vertical in front. The fuscous pubescence on the 

 hind body is fine and quite dense, giving the insect a silky 

 appearance. 



I have one male and three females of this distinct 

 species; all were captured on the mountains of Oahu. 

 The difference between the clypeus of the male and of the 

 female is so exceptionally strong, that I suspect the male of 

 being a vai'iety, though I notice a slight (indeed scarcely 

 discernible) difference of the same kind in most species of 

 the genus in my collection. 



