HYMENOP TERA 



35 



emarginate or truncate. Head in front densely and distinctly punctured, shining 

 between the punctures. Thora.x shining, mesothorax strongly and evenly punctured, 

 rather more largely and closely in the <? than the ?. Propodeum rugose in front. 

 Abdomen with the second segment raised from the base (more strongly in the i) ; 

 beneath, the depression wide but not deep, meeting the apices of the costae widely at 

 its base. 



Hab. Hawaii, Kona district (600 to 2000ft.). A single e.xample (?) taken 

 in the mountains of Molokai (3000 ft.) nearly agrees with the Hawaii specimens, 

 as also one from the mountains of West Maui. 



(10) Odynerus orbits, sp. nov. 



Niger, mandibulis rufis, alis caeruleo-iridescentibus. Capitis vertex incrassatus. 

 Clypeus ad apicem depressus, levissime emarginatus. Mesonotum haud nitidum, 

 distincte (nee grosse) punctatum. Propodeum obscure punctatum. Abdominis seg- 

 mentum 2 a basi elevatum, subtus depressione lata at alta, lateribusque suis post 

 costas subfortiter elevatis. ?. Long. 10 — 1 1 mm. (Plate I. fig. 17 and 17a.) 



Black, the mandibles red, the wings with blue iridescence. Clypeus with a 

 depression at the apex, which is very slightly emarginate. Head above the antennae 

 distinctly and closely punctured, the vertex somewhat strongly incrassate. Meso- 

 thorax dull, distinctly but not coarsely punctured ; scutellum with fine and feeble 

 puncturation. Propodeum with some evident but very feebly impressed coarse 

 punctures. Abdomen with the second segment, raised from the base but not at all 

 abruptly, beneath with the depression wide and deep, the segment at the sides 

 rising abruptly and rather strongly above the apices of the costae. 



Hah. Hawaii, Kona (2000ft. and upwards). Rare. Kilauea (4000ft.). i?. 



(11) Odyncriis caenosits, sp. nov. 



Niger, alis infuscatis caeruleo-iridescentibus, abdominis segmenti primi et secundi 

 margine apicali flavo-albido. Frons capitis densissime rugoso-punctata. Mesonotum 

 cum scutello fortiter denseque punctatum, subnitidum. Propodeum rugosum. Abdo- 

 minis segmentum secundum a basi elevatum, subtus depressione haud lata, lateribusque 

 suis abrupte supra costarum apices subfortiter elevatis. Long. 8 — 9J mm. 



Black, the two basal segments of the abdomen with an apical creamy-white band, 

 the second being the wider of the two. The front of the head is very densely 

 rugosely punctured, the mesothorax coarsely and closely punctured, the surface shining. 

 The propodeum is rugosely sculptured. Basal segment of the abdomen shining, coarsely 



5—2 



