218 MESSRS. T. BLACKBURN AND P. CAMERON ON THE 



28. Odyneras moidanus. 



Odynerus montanus, Smith, I. c. p. 680. 



Common on mountains of Oaliu. 



29. Odynerus cardinalis. 



0. cardinalis, sp. nov. Robustus^ nitidus, parum pubes- 

 cens^ perniger; alis splendide purpureis, capite for- 

 tius confertim^ thorace sparsim subtilius_, punctatis ; 

 clypeo vix emarginato ; abdomine sparsim subsequa- 

 liter punctato, segmento primo fortiter transverso, 

 antice hand verticali, segmento secundo vix tubercu- 

 lato-elevato. 



Long. cJ 9 millim.^ ? 12-14 millim. 



Though not a large insect, nor structurally isolated, this 

 is by far the handsomest of the Hawaiian Odyneri. The 

 body is of a deep shining black, the wings of a really 

 gorgeous purple colour. The head is closely and deeply 

 punctured, but the punctures are small. The whole thorax 

 is brightly shining, the piunctuation on the prothorax and 

 metathorax being far from crowded, that on the scutellum 

 extremely sparing ; the metathorax is almost impunctate, 

 and is quite smooth. The hind body is brilliantly shining, 

 sparingly set with fine punctures, which are rather evenly 

 distributed, but become a little coarser near the apex. 

 The first segment is very strongly transverse, and, viewed 

 from the side, its upper outline forms a continuous gently 

 rounded ascent from the petiole to the apical margin, no 

 part being at all vertical. The second segment has but 

 little indication of tendency to a tubercular form. The 

 apical joint of the antennae in the male is obscurely 

 testaceous. 



The nearest ally of this insect is 0. montanus, Sm., from 

 which it may be at once distinguished by the richer colour- 



