the Coleopterous Family Erotylidce. (87) 463 



applicato, prosterno triangulai'iter elevato, postice emarginato, 

 antice sub-acuto, immarginato ; epipleuris punctatis, pro antennis 

 concavis ; capite utrinque punctato, mentum sub-elongatum, rotun- 

 datum, 



Triplax. 



Herhst, Kdf. v. 146 — 1793 {typ. russica, L.). 



The European and North American species are typical, those 

 from Madagascar and Brazil are not so, and will doubtless reqiiire 

 the establishment of at least two new generic divisions for their 

 reception ; paucity of material, however, pi*ecludes me from inves- 

 tigating them satisfactorily at present. 



Triplax melanocepliala. 



Tritoma melanocepliala, Latr. Hist. Nat. xii. 39 (1804). 

 Triplax nigriceps, Lac. Erot. 213. 



inelanocephala, Bed. Abeille, v. 23. 



■ , Crotch, Entom. v. 7. 



Germany (Lacordaire), France, Spain, Italy, Algeria. 

 Distinct by the antennte, of which joints 2 — 8 are short, equal, 

 moniliform. 



Triplax Marseuli. 



Triplax Marseuli, Bed. Abeille, v. 24. 



S. France, Algeria. 



Diffei's from T. melanocephala by the antennae, which have the 

 3rd joint sub-elongate, and from T. cyaiiescens by the black elytra 

 and the flat scutellum. 



Triplax cyanescens. 



Triplax cyanescens, Bed. Abeille, v. 26. 

 — -^— 7nelanocephala ||, Lac. Erot. 211 (iiec Latr.). 

 Spain, Portugal, Algeria. 



Distinct by the blue tint, and the punctures in the striae of the 

 elytra. 



Triplax senea. 



Silj)ha cenea, Schall. Act. Hall. i. 254 (1783). 



Triplax — , Lac. Erot. 212. 



, Bed. Abeille, v. 27. 



, Crotch, Entom. v. 7. 



Europe genei-ally, commoner towards the north, Caucasus, 

 E. Siberia. 



T. bicolor, Mai-sh., is not a black variety, but merely a specimen 

 discoloured by grease and dirt. 



