genera and species of Hymenoptera. 193 



longer than broad ; covered with a white pubescence. 

 Antennae a little longer than the body. Mesonotum 

 almost shining, very finely punctured ; mesonotum dis- 

 tinctly bordered all round ; from the tegulae the carina 

 curves round to the scutellum, along the side of which it 

 goes to the end, the two keels converging as they do so, 

 but not joining ; the apex of the mesonotum is also 

 bordered, and there is a lateral keel at the side of the 

 scutellum in front behind the fore wings. The meta- 

 notum is more pilose than the mesonotum ; it is finely 

 rugose all over ; at the base is a waved indistinct furrow. 

 Abdomen covered with long, depressed, white hairs, 

 especially at the apex ; the ventral surface is darker 

 than the rest. The long spur of the posterior tibiae is 

 longer than the 2nd tarsal joint. Female and male. 

 Length, 13 mm. 



Hab. Hawaii, Lanai (Nos. 71 and 114). 



Ophion nigricans, n. s. 



Obscure black, covered all over with a close pale 

 pubescence, the orbits of the eyes before and behind 

 yellow ; the face, more or less of mesonotum, meta- 

 notum at base, pleurae and sternum, brownish. Meso- 

 notum margined along the side to the end of the scu- 

 tellum, which is rugose. Metanotum finely rugose ; at 

 the base is a striated furrow. Pleurae finely punctured. 

 Coxae finely punctured ; spurs thick, setose on under 

 side. Antennae somewhat shorter than the abdomen, 

 obscure brownish fuscous. Wings hyaline ; nervures 

 fuscous ; stigma livid. Length, 19 mm. 



Hab. Hawaii (Nos. 129 and 130). 



Nematus bridgmanii, n. s. 



Black, shining, shortly pilose ; labrum, clypeus, 

 tegulae, apex of coxae, trochanters in part, more or less 

 of femora, tibiae, and tarsi, white ; basal three-fourths of 

 femora broadly lined with black, posterior almost wholly 

 black ; apex of posterior tibiae and the tarsi faintly 

 fuscous. Wings hyaline ; costa and stigma pallid 

 fuscous ; extreme base of latter white. Antennae a 

 little longer than abdomen, moderately stout, tapering 

 slightly towards apex, covered with a microscopic pile. 



