new Species of nisteridae. 343 



SiLiNUS, gen. nov. 



Body elongate, somowliat cylindrical, but a little depressed ; 

 the head imjiressed, frontal stria complete, mandibles more or 

 lesscanalicuhite at the base, antennal fossa circular and open ; 

 thoracic marginal stria complete and partly or wholly con- 

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

 sutural wanting or very faintly marked ; propygidium punc- 

 tate ; pygidium smooth at the apex or marginate ; prosternum 

 sometimes striate ; mesosternum emarginate, stria complete ; 

 all the tibiae dilated. 



The species known have hitherto been placed in PJaty lister, 

 and are pinnigera (type), palmipes, and extrarius, Lew., and 

 rohustus, Sell. 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. 



Zahromorplius dejlexus^ sp. n. 



Ovalig, convexus, niger, nitidua ; pronoto striis 2 latcralibns in- 

 tegris ; elytris striis dorsalibus 1-2 integris, 3 dimidiata, ca^teris 

 nullis ; propygidio pygidioque dense puuctatis ; mesosteruo 

 truncate, margiaato. 



L. 8-8^ mill. 



Oval, convex, black and shining, surface very finely 

 punctulate; the head, frontal stria comi)lete 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, somewhat faint and broken at intervals, 1-2 

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

 somewhat irregular and lightly impressed, the other dorsal 

 strife 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 tibia; are 3-dentate and the anterior femora clearly 

 punctured. 



The peculiar dorsal striation will serve to distinguisli this 

 species. 



Ilab. Isansu, German East Africa. 



