227 



of Lanai, Maui and Molokai, both of the last named species 

 also being coast species on their respective islands. The ma- 

 terial differences are (1) in the coloration of the clypens and 

 the apical margins of the first and second abdominal segments, 

 which are always largely and widely bright yellow (the cly- 

 peus in the ni.ale of 0. smithii is entirely black or at most 

 very occasionally with a flavons spot, whilst that of 0. neivelli 

 has two or sometimes one spot only); (2) the clypens is dif- 

 ferent in structure and much more dentate; (3) the head and 

 m(>Ponotum are more evenly and more distinctly, and the scu- 

 teihim more sparsely punctate; (4) the propodeum is less 

 rv.gose; and (5) the second ventral abdominal segment has 

 the costae longer. Like 0. ncwclli the mesonotum is clothed, 

 when viewed laterally, with appressed sericeous pubescence, 

 whilst on the contrary 0. smithii has this clothed with erect 

 biit short hairs. The mandibles of all three species indicate 

 their close affinity because of the peculiar rudimentary basal 

 tooth, which, thus far, I have not yet noticed in other Ha- 

 waiian species. 



Notes and List of Insects Trapped in Alameda and Santa 

 Clara Counties, California, During a Short Auto Trip 

 Whilst Speeding Along the Main Roads. 



BY WALTER M. GIFFARD. 



Following a prolonged illness, when it was not possible 

 for me to tramp and collect insects during a recent sojourn 

 in San Francisco, it occurred to me that the monotony of my 

 dnily automobile rides along the boulevards and main roads 

 in the valleys of Alameda and Santa Clara Counties might 

 be made less monotonous if I were to adopt some method of 

 capturing some of the small insect life which was visible on 

 sunny and otherwise favorable days. Unfortunately the idea 

 came to me towards the close of my vacation, and I was in 

 consequence able to carry out the simple scheme I had planned 

 or; two occasions only: once in the Niles Canyon and Liver- 

 More Valleys and once in the Valley of Santa Clara. The total 

 tin.e occupied in capturing the specimens hereafter referred 

 to approximated in all three hours, beiiig otherwise occupied 



Proc. Haw. Ent. Soc. Ill, No. 3, September, 1916. 



