422 ATn)JE. 



b-. ] Jasal three abdominal segments red, 

 apical three black. 

 d\ Apex of clypeus, labruni, and 



mandibles black //. cameroan, p. 432. 



h'\ Apex t)t' clypeus, labrum, and 



mandibles yellow H. xanthognathus, p. 432. 



b'. Abdomen more or less punctured, 

 a'-. One or more of the abdominal seg- 

 ments red or rufo-fuscous. 

 a^.. Basal abdominal segment im- 



punctate, highly polished .... II. wrour/htoni, p. 432. 

 b^. Basal abdominal segment punc- 

 tured H. ini'idus, p. 433, 



6". Abdominal segments whollj^ black. 

 a^. Apical margins of segments with 

 pubescent bands. 

 a*. Front below ocelli with a 



vertical medial carina .... H.feai, p. 433. 

 b*. Front not carinated, 



a^. Length 11 mm H.Jimbriatus, p. 433. 



6'. Leng'th 7 mm H. yavrulus, p. 434. 



6*. Bases of abdominal segments 2-5 

 with pubescent bands, apical 



margins bare H. consirietusy p. 434. 



c*. Abdominal segments without 

 pubescent bands. 

 u*. Apex of median segment 



roundly truncate ILJimhriatellus, p. 434. 



&'. Apex of median segment 



sharply abruptly truncate . . H. ducalis, p. 435. 

 E. Enclosed space at base of median segment 

 reticulate, 



a. Head and thorax brassy green U. lucidipennis, p. 435. 



h. Plead and thorax nigro-seneous; median 



segment black S. 7-ugolatus, p. 436. 



c. Black, with an obscure greenish tint in 



certain lights H. cuniculus, p, 436. 



d. Entirely black, with a castaneous or 



chalybeous tint sometimes. 

 a' . Abdomen punctured. 



d'. Median segment reticulate on the 

 sides and apex, 

 a}. Scutellum and postscutellum 



reticulate H. fienebris, p. 436. 



h^. Scutellum and postscutellum not 

 reticulate. 

 a*. Second abdominal segment 



constricted at base H. ciris, p. 436. 



h*. Second abdominal segment not 



constricted at base H. visknu, p, 437. 



h^. Median segment not reticulate at 

 3\>les and apex. 

 (T*, ]iasal abdominal segment gla- 

 brous II. sfilufatttr, p. 437. 



6^. Basal abdominal segment not 



glabrous H. buddha, p. 437. 



