new Species of Histerides. 187 
and the posterior edge is thickened and somewhat overhangs 
the pygidium, the latter punctate; the prosternum is narrow 
and bistriate, striz parallel until they join in front just before 
the suture ; the mesosternum, acumination minute, stria well- 
marked and slightly bent in front, surface (and also that of 
the metasternum) punctulate ; the anterior tibize 5-dentate. 
This is another very remarkable species, but evidently a 
species of Pachycrerus. 
Hab. Cameroon. 
Pachycrerus mimicus, sp. n. 
Oblongus, parallelus, subcylindricus, rufo-brunneus, nitidus ; capite 
excavato, stria integra; thorace quadrato, punctulato, stria in- 
tegra, ante scutellum foveolato; elytris, striis subhumerali, 1—4 
et suturali integris, 5 dimidiata; prosterno bistriato, striis an- 
ticis et posticis conjunctis. 
L. 32 mill. 
Oblong, parallel, subcylindrical, reddish brown, shining ; 
the head, face excavated as in the last species, surface with 
various-sized punctures, not closely set, striacomplete, straight 
anteriorly, and continuing along the base of the head, clypeus 
pointed in front ; the thorax quadrate, with an antescutellar 
fovea, lateral stria complete and continued finely in front, 
surface somewhat closely and a little irregularly punctured ; 
the elytra—striz, subhumeral external complete, internal very 
short and basal, 1-4 and sutural complete, 5 dimidiate, the 
sutural at the base turns away from the scutellum ; the pro- 
pygidium and pygidium are punctured like the thorax and 
the latter is convex above; the prosternum, keel narrow and 
straight, widening out only at the base, the striz join at the 
base and in front, at the base they widen out a little, ante- 
riorly they run nearly parallel until they join before the 
suture; the mesosternum is feebly produced in front and 
rounded off in the middle, sinuate on either side, the stria is 
fine and continues round the anterior angles, and is then lost 
in two transverse impressions which are seen on the anterior 
edge on either side; all the sternal plates are punctulate ; 
the tibiz, anterior pair 4-dentate. 
Supertficially this species resembles one of the cylindrical 
Platysome. 
Hab. Cameroon. 
Hister intrepidus, sp. n. 
Oblongo-ovatus, convexiusculus, niger, nitidus; fronte levi, stria 
integra antice recta ; pronoto ciliato, stria interna parallela, antice 
