HYMENOPTERA 45 



(29) Odynerus dromedarms. 



Odynerus dromedarms, Blackburn, P. Manch. Soc. xxv. (1885-86), p. 151. 



Praecedenti cognatissimus, sed tegulis atris : mesonoto magis opaco. ^ apice 

 tibiarum et clypei, mandibulis pronoto et postscutello nunquam rufo-notatis. c/'?- 

 Long. 8 — 9 mm. 



Differs very little from the preceding except in colour. The c/ has no red 

 markings except the small median .spot behind the antennae and those behind the 

 eyes. In the ? the former is sometimes absent and in both sexes the tegulae are 

 always dark. 



The surface of the thorax is rather more dull, the minute system of punctura- 

 tion being rather more dense, and generally the puncturation, especially of the scu- 

 tellum, is slightly better defined. 



Hab. Kona, Hawaii (3000 — 4000 ft.). Kilauea (4000 ft.). 



(30) Odynerus oaJiuensis, Dalla Torre. 



Odynerus diversus, Blackburn, P. Manch. Soc. xxv. p. 161 (nee Walker). 

 Odynerus oahensis (sic), Dalla Torre, Wien. Ent. Zeitg. viii. (1889), p. 124. 



Niger, alis ex majore parte subhyalinis, haud caeruleo-iridescentibus. Frons, 

 pronotum, tegulae, mesopleurae, scutellum, et postscutellum rubro-notata. Abdominis 

 segmentum primum et secundum postice rubro-marginata, hujus etiam lateribus rubro- 

 maculatis. Segmenta caetera etiam saepe plus minusve rubro-marginata. 



c/' clypeo fortiter, ? vix emarginato. Mesonotum subnitidum, fortiter punctatum. 

 Propodeum laeve, parce subobsolete punctatum. Abdominis segmentum primum for- 

 titer transversum : secundum convexum, haud a basi elevatum, lateribus fortiter 

 rotundatis ; subtus post costas late triangulariter deplanatum, vix depressum, costis 

 distinctis. cT ? . Long. 8 — 10 mm. 



Black, with a red median spot behind the antennae and another behind each 

 eye. The prothorax, tegulae, mesopleurae, scutellum and postscutellum are spotted 

 with red. The apical margin of the first and second abdominal segments as well as 

 the sides of the latter are of the same colour, and some of the following segments 

 are more or less red along their apical margins. 



Clypeus of i strongly, of ? hardly emarginate. Head above the antennae 

 coarsely and very closely punctured. Mesothorax rather more largely but not quite 

 so closely. Scutellum sparsely punctured. Propodeum with the surface smooth, 

 bearing some very shallow punctures. Abdomen with the basal segment strongly 



