Notes on Hawaiian Wasps. 130 



Odynerus crypterytlmts, sp. n. 



Niger, mandibulis et nonnnnquain apice clypei rufis ; abdominis seg- 

 ment! primi et secundi lateribus vel secundo solo rufonotatis. Capvit et 

 pronotum opaciim, illo minus dense subtilius irregulariter punctato, 

 propodeo leevi, hand nitido, impunctato. Abdominis segmentum a 

 basi distincte subtuberculatira elevatum ; subtus, depressione dis- 

 tincta, costis sat longis. AI?e infuscata?, ca^ruleo-iridescentes. 

 $ $ . Long. 7-9 m.m. 



Sp. 0. obsctire-punctato, et 0. nibropustulato, similis et affinis, ab 

 hoc differt mesonoto multo subtilius punctato et propodeo baud- 

 quaquam punctato ; ab illo depressione segmenti 2 ventralis minus 

 lata, costarum apices ab basim multo minus late attingente. 



Hah. Found on both sides of Hawaii, but probably 

 much scarcer than the aUied species. 



Ohs. This species further differs notably from the allied 

 species, in the form of the basal abdominal segment. In 

 these the front face or basal part is extremely abrupt, and 

 in profile its outline forms an angle (rounded off) with the 

 dorsal face. In the present species the lateral outline 

 is a strong, but almost even curve from the petiole to 

 the apex. 



Odynerus ncuvlli, sp. nov. 



Niger, clypeo flavonotato, abdominis segmentis 2 basalibus 

 postice flavomarginatis, alis baud aut vix evidenter caeruleo-iride- 

 scentibus. Clypeus profunde emargiuatns, capitis fronte subti liter, 

 remotius et plus minusve obsoletim punctata. Mesonotum opacum 

 distincte sat dense nee grosse punctatum, propodeo rugoso vel 

 subrugoso. Abdominis segmentum 2 dorsale baudquaquam elevatum ; 

 ventrale post costas depressione levissima, nonnunqnam vix dis- 

 cernenda, signatum. ^. Long. 7-10. 



Sp. 0. smithii, D.T., cognatissima, capitis fronte subtilius, obsole- 

 tius et remotius punctata distinguenda. 



Hah. Hiio, Hawaii, on the coast and also on the Kona 

 coast. 



The $ will no doubt differ by its black clypeus, less 

 deeply emarginate, and the less distinct abdominal bands, 

 probably one or both being generally wanting. This species 

 was discovered by Bro. Matthias Newell. 



