266 Mr. G. Lewis on 



are settled and the lineal arrantrement of the jjenera somewiiat 

 adjusted. 



Tlie genus Proholosternus founded here is a remarkable 

 one, and as three species of it have been recently discovered 

 (one in Guinea and two others in the French Congo), it is 

 highly probable that many more exist in Central Africa, and 

 the species also vary so much in size, whicli increases the 

 probability that intermediate forms exist, [t is also likely, 

 ifrom the form of the sterna, that the species have the same 

 habits as those of Pachycrcerus^ wiiich are known to follow 

 the xylophagous beetles, feeding on the euphorbite and other 

 African shrubs and trees. 



There are two species of the genus Ulster noticed here 

 (//. MarshaUi and //. augoniensis) which have the inner 

 subhumeral strife complete, and a reference to them will show 

 how essential it is at times to recognize the importance of the 

 basal oblique humeral stria of the elytra. Sometimes, although 

 rarely, the inner humeral stria is so similar to the first dorsal 

 stria that it is impossible to distinguish the one from the other 

 without noting their position in regard to it. 



List of Species. 



Hololepta dyak. *Phelister festivus, Le^v. 



svntexis. *Notolister sulcicollis, Ze?t». 



♦Placodes opacus, Lew. Hister luonbasanus. 



Apobletes parallelus. zambesius. 



cavifrons. augoniensis. 



macilentus. * MarshaUi, Leio. 



platessse. brulmiinius. 



Liopvgiis chalcis. froutali.-;. 



*Platylister mirabilis, Lew. *Coproxeiiu.s MarshaUi, Z«<7. 



* extrarius, Leiv. Stictostix parra, Mars, 



cathayi. NotocceUs satur. 



enodis. Sitalia Severini, Leu\ 



I'latysoiua assamense. Ilomalopygus remex. 



disparile. Terapus muricatiis. 



Pachycneriis chlorites. Saprinus punctisternus. 



Probolosternus al'ricanus. castauipes, Curtis. 



permundus. Isesus. 



minor. Teretrius Braganzse. 



♦Baconia loricata, Lew. Epiechinua Marseuli. 



Epitoxus coi^cseus. 



Hololepta di/ak, sp. n. 



Oblongo-ovalis, depressa, nigra, nitida ; fronte impressa, mento 

 baud carinato ; thorace lateribus sparse punctulato ; elytris 

 striis dorsalibus brevissimis, 1" appeadice curvata ; propygidio 



* Species with an asterisk are not described iu this paper, but are 

 figured in the Plate. 



