160 Mr. A. Murray on Coleoptera from Old Calabar. 



ACANTHOGENIUS, Rcichc. 



1. Acanthogenius bimaculatus, Dej.* 



Helluo bimaculatus, Dej. 5. 402. 



Acanthogenius bisignatv^, Reiche, Ann. Soc. Ent. France, ix. 334. 



Ater, punctatissimus ; labro rotundato, Isevigato ; elytris striatis, 

 macula media rotundata pallida flavo-testacea ; tarsis rufo- 

 piceis. 



Long. 6 lin., lat. 2 lin. 



Pheropsophus, Solier. 

 1. Ph. marffinatus, Dej. 1. 109. 



Capite testaceo, puncto verticis nigro; thorace testaceo, mar- 

 gine antico posticoque nigris; elytris costatis^ nigris, sub- 

 parallelis, puncto humerali, margine laterali, fascia media 

 dentata abbreviata, apice, antennis pedibusque testaceis. 



Long. 7-8 lin., lat. 2| lin. 



2. Ph. minor, mihi. 



Capite testaceo, vertice et postice nigro ; thorace supra nigro, 

 vel nigro cum macula marginali testacea, subtus nigro, cum 

 margine testaceo; elytris costatis, nigris, postice latioribus, 

 interdum cum puncto humerali testaceo, interdum sine puncto 

 humerali, cum macula media testacea dentata, apice leviter 

 testaceo; pectore testaceo; abdomine nigro; antennis pedi- 

 busque testaceis. 



Long. 6J~4| lin., lat. 2^-2 lin. 



The smallest species of Pheropsophus with which I am ac- 

 quainted. Head and mouth testaceous, with the vertex and 

 back part black, smooth in front, with a shallow depression on 

 each side, faintly corrugated behind. Antennse long, reaching 

 to the middle of the elytra, fusco-testaceous, a little more dusky 

 towards the tip. The upper side of the thorax is black, but 

 sometimes a transverse testaceous blotch shows itself on each 

 side of the thorax; it is smooth and impunctate, but some 

 small depressions may be seen irregularly occurring along the 



* Dej can's name bimaculatus has been changed by M. Reiche, as above 

 noted, into bisignatus, on the ground that M'Leay had previously occupied 

 the name in the aUied genus Planetes by his species Planet es bimaculatus. 

 But I think this is carrying the dread of a double employment of names 

 to an excessive extent. Planetes is recognized as a good and distinct 

 genus from either Macrocheilus or Acanthogenius, and a repetition of the 

 same specific name in each does not seem to entail any great inconvenience 

 — certainly none so great as that of changing a well-known and established 

 name. 



