58 FAUNA HAWAIIENSIS 



less strong; and the propodeum as well as the rest of the thorax is entirely black, 

 without red markings. The depression beyond the costae of the second ventral 

 segment is also of a somewhat different character, and less deep. 



Hab. Mountains of Hawaii (4000 ft.), Kona and Kau districts. 



(54) Odynerus blackburni. 



Odynej'tis blackburni, Kirby, Ent. Month. Mag. xvii. p. 87. Blackburn, P. 

 Manch. Soc. Vol. xxv. No. 8, Session 1885 — 1886, p. 156. 



Odynerus rubritinctus, Smith ^ nee ?. J. Linn. Soc. Vol. xiv. p. 674. 



Niger, alis fuscis, subaeneo- vel violaceo-micantibus, fronte, tegulis, mesopleuris, 

 scutello plus minusve, postscutello, et propodeo rubro-notatis. Abdominis segmentum 

 primum ex majore parte rubrum ; secundum maculis lateralibus rubris. Coxis femori- 

 busque saepe plus minusve rufis. (/?. Long. 6 — 9 mm. 



Form and sculpture much as in the two preceding species, with which it agrees 

 also in having the prothorax and apical margin of the second abdominal segment 

 black. The scutellum is always spotted with red, sometimes almost entirely of that 

 colour, and the second segment of the abdomen has large lateral red spots. The 

 propodeum is largely red. The head, thorax, and basal segment of the abdomen 

 are covered with large and close punctures ; the second segment longitudinally convex, 

 but not evidently raised from the base. The wings are dark with somewhat of a 

 brassy glitter, and in some specimens with more or less violaceous iridescence, but 

 not blue. 



Hab. Kauai coast and lower slopes of the mountains. Abundant. 



(55) Odynerus soror, sp. nov. 



0. blackburni simillimus, sed pronoto anguste rufo-lineato, mesonoto magis nitido, 

 postice magis profunde punctato, abdominis segmento secundo fortius convexo dis- 

 tinguendus. ?. Long. 8 mm. 



Very like O. blackburni, the wings of the same colour, without any bright blue 

 iridescence. The prothorax in front has a narrow red line on each side, the whole 

 thorax is more shining, the puncturation of the mesothorax is deeper and clearer 

 posteriorly ; the second segment of the abdomen is rather more strongly convex 

 longitudinally, and beneath, its depression is rather deeper. 



Hab. Mountains of Kauai in the forest (3000ft.); 2? taken. 



