2,31 



characters, particularly those of the clypeiis and costae, which 

 very readily distinguish it from both 0. konanus and 0. liilo- 

 ensis. It may also be allied and nearer related to 0. lipocharis 

 Perk, of Kauai, an unique species but lately described (See 

 Suppl. F. H., Vol. II., p. VI., p. 610), by Dr. Perkins from 

 a male only, but of this I cannot be certain as specimens of 

 the latter are not available. 



Notes on Certain Undescribed Species Or Varieties of Hawaiian 

 Wasps {Odijiicnis). 



BY W. M. GIFFARD. 



It is not altogether improbable that at some future period 

 when a general revision and further classification of our Ha- 

 waiian Odyneri are made possible that not only will some of 

 these form several distinct genera or sub-genera*, but some spe- 

 cies already described and since determined as varieties or 

 island forms may be eliminated from the fauna. As however 

 the ])r()speets for any such new classification and revision are 

 somewhat remote it appears reasonable that the system hereto- 

 fore adopted of separating and describing the insular forms, 

 should in the meantime continue, particularly when these show 

 sufficient sculptural and constant minor structural characters, as 

 well as differences in coloration, as to easily separate them from 

 their allies of one or more of the islands in the group. 



Among others I have for the present selected the following 

 as deserving recognition under the present systm of identifica- 

 tion and determination, viz. : 



(1). A sea coast species, allied to 0. neweJll Perk, from the 

 island of Hawaii and (). s)nlthii D. T. from the islands of Maui 

 and Lanai. A large series of both sexes were taken by the 

 writer on three different occasions in the early spring months of 

 11)11, flying over low-growing vegetation along the rocky coasts 

 of Oahu. This species differs from both its allies in the struc- 

 ture at the apex of the clypeus, the puncturation of the head, 

 thorax and propodeum and in the form of the depression of the 

 second ventral segment of the abdomn. The system of pubes- 

 cence on the thorax is also quite different from one of the above 

 named species. It further differs in coloration from either, the 

 clypeus of the $ l)eing very largely bright yellow and in both 

 sexes the bands at the apex of the first and second segments of 



*Fauna Haw. Perkins, Vol. I, pt. I, p. 30. 



