new Sjyecies of Histeridce. 343 



SiLlNUS, gen. nov. 



Body elongate, somewhat cylindrical, but a little depressed ; 

 the head impressed, frontal stria complete, mandibles more or 

 less canaliculate at the base, antennal fossa circular and open ; 

 thoracic marginal stria complete and partly or wholly con- 

 tinued along the base ; ely tral strige 1-4 complete, 5 dimidiate, 

 sutural wanting or very faintly marked ; propygidium punc- 

 tate ; pygidium smooth at the apex or margiuate ; prosternum 

 sometimes striate; mesosternum emarginate, stria complete ; 

 all the tibia3 dilated. 



The species known have hitherto been placed in Platy lister ^ 

 and zx^ innnigera {type), palmipes, and extrarius, Lew., and 

 rohustus, Sch. The frontal stria in the last is very deep and 

 the thoracic stria is simply " complete," not, in the usual 

 sense of this term, passing along the base. In other respects 

 extrarius and rohustus are, judging by the descriptions, very 

 similar. 



Zahromorphus deflexus, sp. n. 



Ovalis, convexus, niger, nitidus ; pronoto striis 2 lateralibns in- 

 tegris ; elytris striis dorsalibus 1-2 integris, 3 dimidiata, ceteris 

 nullis ; propj'gidio pygidioque dense puuctatis ; mesosteruo 

 truncate, marginato. 



L. 8-8] mm. 



Oval, convex, black and shining, surface very finely 

 punctulate; the head, frontal stria complete and nearly 

 straight anteriorly ; the thorax, inner lateral stria complete 

 and continues behind the head and is markedly deflected near 

 the eye, outer lateral ceases after passing the anterior angle, 

 behind the angle the outer interspace has some irregular 

 marks which seem to be the rudiments of a third lateral stria, 

 these marks vary in individuals ; the elytra, inner humeral 

 apical dimidiate, somevvhat faint and broken at intervals, 1—2 

 dorsal complete, 3 basal but reaching the middle and it is 

 somewhat irregular and lightly impressed, the other dorsal 

 stria are wanting, but there are impressions and punctures 

 along the apical margin which apparently represent ap- 

 pendages ; the pygidia are densely punctured ; the meso- 

 sternum is truncate and the marginal stria complete ; the 

 anterior tibiae are 3-dentate and the anterior femora clearly 

 punctured. 



The peculiar dorsal striation will serve to distinguis'.i this 

 species. 



Ilah. Isansu, German East Africa. 



