of Exotic Hymenoptera. 303 



Pterombrus cenigmaticus . 

 (PL VI. fig. 1^ and details la and Ih.) 



Female. Length 5 lines. Head and thorax black, the 

 abdomen red. 



Head closely punctured, with the middle of the 

 vertex, and a space around the ocelli, shining, and 

 having a few scattered punctures; the face and cheeks 

 with a thin griseous pubescence; the mandibles rufo- 

 piceous, with a pale spot at their base ; the palpi pale 

 testaceous. Thorax : the mesothorax and scutellum 

 shining, with a few deep punctures; the metathorax 

 transversely and coarsely rugose, the apex obliquely 

 truncate; wings subhyaline, with a fuscous cloud at the 

 base of the first and second discoidal cells; another cloud 

 occupies the marginal cell, and crosses the wing as far as 

 the inferior margin of the third discoidal cell ; the nervures 

 black; the tarsi as long as the legs, the spurs at the apex 

 of the tibife pale testaceous. Abdomen ferruginous, 

 smooth and shining. 



Hab. — Brazil. 



In the Collections of W. W. Saunders and F. Smith. 



I have only seen two examples of this insect. 



Fam. POMPILID^. 



Genus Dolichueus. 



1. DoUchurus carbonarius. 



Female. Length 3 lines. Shining black, with the 

 metathorax subopaque. 



Head: the face longitudinally and coarsely sculp- 

 tured, the vertex smooth and shining; the antennae 

 inserted on each side of a concave tubercle situate 

 at the base of the clypeus, the latter with a sharp 

 carina down the middle. The prothorax transverse- 

 quadrate, with a shining tuberculate process on each 

 side, and a few transverse striae in front; the meso- 

 thorax and scutellum smooth and shining; the meta- 

 thorax above nearly quadrate, margined by an elevated 

 carina, transversely and coarsely sculptured, and having 

 three longitudinal caringe scarcely extending to the pos- 

 terior margin; the truncation rugose, a minute tooth 

 at the lateral margins a little beyond the middle. The 

 abdomen smooth and shining, and the margins of the 

 first and second segments depressed. 



Hab. — Australia (Champion Bay) . 



In the British Museum. 



