186 Mr. G. Lewis on 



dark reddish bi'ownj wholly punctured above and below ; the 

 head in front of the eyes and epistoma widely and deeply 

 excavated, the base of the excavation is vertical, epistoma 

 transverse, with anterior rim raised, frontal ridge at posterior 

 limit of the excavation emarginate in the middle; the thorax 

 nearly as broad as long, lateral rim raised and continued as a 

 stria along the base ; anteriorly there is no marginal stria ; 

 the elytra are not quite so long as the thorax (best seen in a 

 side view) — striaj, subliuraeral external complete, internal 

 dimidiate, 1-3 short and basal, each about a third of the 

 elytral length, and posteriorly breaking up into punctures, 4 

 very short, 5 wanting, sutural longer than the first, all the 

 strias are transversely connected at the base ; tlie prosternum, 

 anterior lobe very wide, clearly punctured, and microscopi- 

 cally strigose, keel narrow, but relatively less so than that in 

 P. cavifrons^ with two lateral caringe straight and parallel, 

 interstice punctate ; the mesosternum is arch-shaped, the 

 shape is rendered conspicuous by the marginal stria being 

 complete and cariniform ; metasternal suture well-marked 

 and straight ; the anterior tibise are 6- (or 7-) dentate. 



I see no reason at present why this curious species should 

 not also be included in Pachycrcerus. In outline it resembles 

 a small species of Cis. 



Hah. Cameroon. 



Pachycrcerus sulcicolUs^ sp. n. 



Oblongus, parallelus, depressiis, uiger, nitidus ; capitc concavo, stria 

 valida antice recta ; pronoto utrinque sulcato, stria antice et 

 postice Integra ; elytris striis subhumeraH externa et 1-6 iiitegris ; 

 propygidio postice prominulo. 



L. 3f miU. 



Oblong, parallel, depressed, black, shining; the head, face 

 concave, surface rather uneven, with various-sized punctures, 

 stria complete, cariniform, and straight anteriorly; the thorax 

 wider than long, densely sculptured, surface minutely rugose 

 with large, irregular, and sometimes confluent punctures, 

 mixed with small points ; the lateral edge is carinate and 

 continued as a stria behind the head, but the stria is almost 

 obliterated by the rough surface-sculj)ture ; the stria is also 

 continued round the base of the thorax in a rough crenulate 

 form, within the lateral carina the thorax is sulcate, sulcus 

 widest near the middle ; the elytra — striaj, external sub- 

 humeral complete, internal wanting, 1-6 all complete, the 

 sutural and fifth joining at the base ; the propygidium is 

 remarkable, it is irregularly punctured, chiefly at the base, 



