286 Mr. R. E. Turner on Fossorial Hymenoptera. 



mediana fuscis, utrinque macula maxima flavo-brunnea; ster- 



nilis brunneo-ferrugineis ; alis nigro-cterulois. 

 S . Feminae similis ; tergitis duobus basalibus kete flavis, apioo 



anguste ferrugineo-marginatis, tertio sequentibusque t'errugineis. 

 Long., $ 22 mm., ^ 15 mm. 



? . Clypeus broadly rounded at the sides, the middle of 

 the apical margin almost transverse, very feebly sinuate, a 

 row of five or six large punctures, each of which has a long 

 black hair, before the apical margin; labrum deeply incised, 

 with a fringe of long fulvous hairs. Interautennal pro- 

 minence well developed, rounded at the apex. Antennae 

 stout, the second joint of the flagellum about half as long 

 again as the third; posterior ocelli a little further from the 

 eyes than from each other ; eyes separated on the vertex by 

 a distance about equal to the length of the two basal joints 

 of the flagellum. Pronotum very broadly rounded at the 

 anterior angles, not transverse ; scutellum convex, not 

 strongly compressed laterally. Median segment trans- 

 versely striated, the striae strong, regular, and widely 

 separated, stronger towards the apex than at the base ; the 

 posterior slope almost vertical, abrupt, the surface smooth 

 at the apex, but with strong striae at tbe base ; the tubercles 

 at the basal angles of the segment obsolete. Abdomen 

 opaque ; sixth tergite sparsely clothed with long black and 

 fulvous hairs ; transverse groove of the second sternite 

 situated near the base. Comb of the fore tarsi stout, but 

 not long ; hind tibiae spinose the serration rather feebly 

 developed. Third abscissa of the radius much longer than 

 the first and second combined ; second recurrent nervure 

 received at the middle of the third cubital cell ; submedian 

 cell much longer than the median ; cubitus of the hind 

 wing originating much before the transverse median 

 nervure. 



$ . Antennae stout, nearly as long as the whole insect, 

 the second and third joints of the flagellum subequal. 

 Anterior margin of the clypeus transverse, labrum very 

 shallowly emarginate. Transverse groove of the second 

 sternite very feeble ; apical sternite very broadly rounded 

 at the apex ; the penultimate with a longitudinal ridge on 

 each side ending in a short spine, the space between the 

 ridges shining, the remainder of the sternites pubescent. 



Hab. Semliki Plains, near southern shore of Lake Albert, 

 2200 ft. (S. A. Neave), November 1911. 



Easily distinguished from glabratus and its allies by the 

 much more coarsely striated median segment. 



