HYMENOPTERA 609 



Odynerus iopteryx P. 



O. iopteryx Perkins, huj. op. i. p. 63. 

 O. illudens P., Ent. Mo. Mag. (2) xii. p. 267. 



The unique specimen, on whicli I described O. iopteryx, was a somewhat abnormal 

 example. 



Hab. Oahu ; widely distributed, coast and mountains. 



Odynerus acoelogaster P. 



O. acoelogaster P., huj. op. i. p. 65. 



O. relictiis P., t. c. p. 74. 



O. lithophilus P., Ent. Mo. Mag. (2) xii. p. 267. 



O. lithophilus, Pr. Hawaii Ent. Soc. i. p. 72. 



The original description was based on an abnormal e.xample ; O. relictus was 

 founded on a very old unique specimen in the British Museum from the Beechey 

 collection. The proper description of this variable species is in the Proceedings of the 

 Hawaiian Entomological Society as cited above. The original name is fortunately 

 quite applicable to the species in all its varieties. 



Odynerus egens P. 



O. egens P., huj. op. i. p. 61. 

 O. infanstus P., t. c. p. 73. 



The latter described from a very old specimen of the Beechey collection is no doubt 

 identical with O. ep-ens. 



i' 



(i) Odyneriis thersites, sp. nov. 



Black, teeth of mandibles more or less red, sometimes a spot behind the eyes and 

 a median frontal spot yellow. Wings hyaline and subinfuscate, with a bluish or 

 violaceous iridescence in some lights. General appearance that of O. peles, but the 

 clypeus is quite deeply emarginate and bidentate ; the head above the antennae with 

 excessively dull surface and a very scanty and feeble, in fact hardly discernible punctu- 

 ration. Mesonotum excessively dull, with remote and very faint punctures, the 

 propodeum rugose. Basal segment of the abdomen with largish but shallow punctures, 

 the second simply convex, beneath the costae well-developed, the depression not defined 

 but represented by a faint median impressed line. Male ; length 6 — 8 mm. 



An overlooked species, very likely previously confounded by me with the variable 

 ^)eles, but nevertheless distinct. 

 PP- '-f AB. Hawaii in the mountains at 4000 ft. or more. 



F. H. 



