804 MR. E. A. ELLIOTT ON THE 



This species resembles B. leucodontus Sclilett., but the 

 anterior tubercle is fully developed, second flagellar joint shorter, 

 pro- and meso-notum more coarsely sculptured and hind femora 

 tridentate. From D. salomonis Westw. it may be at once known 

 by the conformation of the neck of prothorax and the tridentate 

 hind femora. 



3. FusciDENS Kieff. 



Diastephamis fvscidens Kieff. (4), p. 118, 5 . 



5 . Head subglobose ; frons and vertex irregularly rugose, 

 latter with three transcarinse in front ; occiput trans- striate, 

 dull ; posterior margin of head produced into a collar. Second 

 flagellar joint one and a half times as long as first ; third longer 

 than first and second together. Pronotum coriaceous, with 

 polished posterior mai-gin ; mesonotum transrugose ; scutellum 

 centrally smooth and shining, marginal rows of punctures 

 superficial. Pleurae alutaceous. Median segment alutaceous, 

 with large, diffuse punctures. Petiole densely traiis-striate. as 

 long as remainder of abdomen. Terebra as long as body, spicula 

 red, sheaths entirely black-brown. Hind legs with coxse trans- 

 striate ; femora tridentate ; tibise compressed to beyond middle. 



Black ; head except apices of mandibles, four basal antennR,l 

 joints, basal half of third segment entirely, anterior legs, apex of 

 hind coxpe, hind femora entirely and hind tibise basally red ; 

 hind tarsi testaceous ; apical joint of all tarsi black ; femoral 

 teeth brown. Wings hyaline, stigma and nervnres subhyaline. 



Length 11 mm. 



Habitat : Oameroons (Conrad t). Type in National Entomo- 

 logical Museum, Berlin. 



Yery like D. leucodon Kieft'., difieriug chiefly in the iiregularly 

 rugose frons, transrugose mesonotum, and in the colour of 

 terebral sheaths and hind femoral teeth. 



4. BiROi Szepl. 



Fcenatopus btj-oi Szepl., p. 530, 5 • Diastephanus h. Enderl. 

 (2), p. 475. 



$ . Frons irregularly, not transvei'sely rugose ; occiput shoit 

 and rugose ; posterior margin of head bordered. First and 

 second flagellar joints of equal length. ISTeck short, subquadrate, 

 anteriorly transA"ersely, then irregularly rugose ; semiannular 

 coarsely rugose. Mesonotum coarsely rugose ; scutellum centrally 

 smooth, otlierwise diffusely punctate. Mesopleurse with large, 

 dense punctures, anterioi'ly dull. Median segment with large 

 punctures, which are confluent and form rugosities on the apical 

 half. Petiole finely striate, about as long as rest of abdomen. 

 Terebr-a slightly shorter than body, sheaths black. Hind cox8B 

 finely trans-striate, their femora finely and densely punctate 

 tridentate. 



