74 FAUNA HAWAIIENSIS 



(85) . Odynerus oblitus, sp. nov. 



Niger, alls fuscis, abdominis segmentum basale postice testaceo-marginatum. 

 Mesonotum opacum subtiliter sparsim punctatum, necnon etiam interstitiis subtilis- 

 sime distincte punctulatis. Abdominis segmentum secundum ventrale post costas 

 haud depressum, costis fortibus. i. 



Black, the wings fuscous without blue iridescence, the apical margin of the 

 basal segment of the abdomen testaceous, perhaps yellow in fresh examples. Cly- 

 peus faintly emarginate at the apex. Head dull, finely, feebly, and irregularly punc- 

 tured. Mesothorax dull, very finely and sparsely punctured, and with a distinct and 

 very minute puncturation between the larger punctures. Propodeum dull impunc- 

 tate. Basal segment of the abdomen obsoletely punctured ; second, beneath, with 

 strong costae and beyond their apices flat, with no depression. 



Hab. Brought back by the Beechey expedition, probably from Oahu. A single 

 much mutilated </" example in the British Museum. 



(86) Odynerus rclicfus, sp. nov. 



Niger, capite cum thorace flavo-notato. Abdominis segmenta duo basalia postice 

 flavo-marginata. Mesonotum opacum, sat evidenter, subirregulariter, punctatum. Ab- 

 dominis segmentum primum leviter punctatum ; secundum ventrale post costas haud 

 depressum, costis distinctis, parte sua basali sat brevi. ^. 



Male black, the mandibles with a small yellow spot at the base. The clypeus, 

 a small spot on the scape of the antennae, one behind their insertion, two on the 

 prothorax, others on the tegulae, and the postscutellum, yellow, as well as the apical 

 margin of the two basal abdominal segments. No doubt these yellow markings 

 would be variable in a series of examples. Head dull, subobsoletely punctured ; 

 thorax dull, evidently, but somewhat irregularly, punctate, and with the system of 

 interstitial minute puncturation distinct ; scutellum irregularly punctured, the pro- 

 podeum dull, with the surface somewhat roughened by large subobsolete punctures. 

 Abdomen with the basal segment feebly punctured ; second convex, distinctly punc- 

 tured on its yellow apical margin ; beneath, its basal portion is short, the costae are 

 distinct, and there is no depression beyond them. All the tibiae have a yellow 

 line above. The wings are infuscate, and have a slight blue iridescence. 



Hab. Probably from Oahu (Beechey expedition). A single <? example in the 

 British Museum under the name of O. nautarum, de Sauss. The description of that 

 species says "le metathorax seul ponctue," which will not at all agree with the insect 

 above described. This species might be placed near O. insulicola, Blk. 



