116 POLYPLASTUS ASSARIUS. 



and the tarsi black. Head coarsely punctured, clypeus sub- 

 quadrate , very closely punctured , the apex narrowly re- 

 flexed and slightly emarginate. 



Thorax coarsely punctured at the sides , the punctures 

 finer on the disc, the sides obliquely narrowed in front, 

 obtuse and slightly prominent in the middle and scarcely 

 narrowed behind with the basal angles a little produced 

 and obtuse. Scutellum sparsely punctured. Elytra short , 

 leaving the pygidium and penultimate segment exposed , 

 broadest before the middle, with eight rows of coarse punc- 

 tures , the six discal rows strongest with the interstices 

 convex and remotely punctured , the two lateral rows very 

 close together and somewhat irregular , an impressed mar- 

 ginal line at the sides and suture and a slight impression 

 on each side of the humeral prominence. Pygidium strongly 

 produced, very convex and slightly compressed near the 

 apex, very sparsely and finely strigose at the base, more 

 closely strigose towards the apex , the apical margin a little 

 reflexed ; the penultimate segment above finely punctured. 

 Underside punctured and sparsely pubescent , abdomen stri- 

 gose at the sides, a small impression at the apex. Legs 

 punctured , the femora and tibiae sparsely fringed with red- 

 dish grey hairs. — Length 15 — 17 mm. 



W. Africa , Liberia. 



I have for some years possessed specimens of this pecu- 

 liar species and others have been recently received at the 

 Leyden Museum from Junk River , Liberia , collected by 

 F. X. Stampfli. In some of the specimens the elytra are 

 entirely testaceous red but in most of them they are more 

 or less piceous especially at the base , the testaceous lateral 

 borders of the thorax also vary slightly in width. 



I have examined the interior of the abdomen of all these 

 specimens aud find they are males, but a single specimen, 

 also sent to the Leyden Museum by F. X. Stampfli, which 

 I at first regarded as a distinct species , proves upon dis- 

 section to be a female and should, I am inclined to think, 

 be referred to this species ; it differs from the males in 



Notes from tlie Leyden IMusetiiii , "Vol. X. 



