264 G. Lewis: On some African Histeridae. 



posterior lobe reflexed at the base, anterior lobe with two fine 

 Striae at the sides; the mesosternum rather wide nearly straight 

 in front, marginate; the legs, anterior tibiae 3-dentate, tarsal grooves 

 straight and deep, anterior thighs marginate on the edges with two 

 fine lateral internal Striae. 



The internal subhumeral Stria and the first dorsal Stria join 

 apically and are alike in depth width and completenessj this gives 

 the species the appearance of having fourteen dorsal Striae. 



Hister Bismarcki sp. n. 

 Ovalis, convexus, niger, nitidus; fronte Stria integra late arcuata; 

 thorace Stria interna integra sinuata, externa partim abbreviata; 

 elytris striis 1 — 3 integris, 4 — 6 abbreviatis ; propijgidio pygidioque 

 dense punctatis; prosterno lobo bistriato. — Long. Q^ mill. 



Oval, convex, black, shining; the head smooth Stria widely 

 arched and feebly sinuous; the thorax marginal Stria extremely fine 

 and only visible above near the anterior angle, internal Stria sinuous 

 and deep laterally, fine and feebly crenulate behind the head, 

 external Stria rather fine and abbreviated before the base, scutellar 

 fovea small; the elytra, Striae, internal subhumeral deep and rather 

 wide reaching the apex but well shortened in front, 1 — 3 complete with 

 interstices widening towards the bases, 4 apical dimidiate and bent, 

 5 shorter and straight, 6 passes the middle and apically turns 

 away from the suture; the propygidium densely punctate, punctures 

 somewhat oblong , base narrowly smooth , lateral edges feebly 

 raised; the pygidium very densely punctured, punctures with inter- 

 stices a little raised and arranged somewhat longitudinally, posterior 

 margin narrowly raised; the prosternum, anterior lobe bistriate on 

 either side, posterior lobe small; the mesosternum truncate, mar- 

 ginal Stria entire; the legs, anterior tibiae dilated gradually from 

 the bases, 3- or 4-dentate, apical tooth triangulär. 



The funiculi of the antennae in H. crenulatus, Bismarckii 

 and H. aschanti (if I have rightly determined the last) have 

 the joints gradually enlarged towards the club and, in the genus 

 Campylorrhabdus^ one of the characters is ^funiculi articulis sensim 

 crassioribiis'^. 



Hister aschanti Seh. 1889. 

 An example in this collection agrees with Herr Schmidt's 

 description except that the thorax is not ciliate. This makes my 

 determination doubtful. 



