196 On new Species of Histeride. 
Elongate, cylindrical, black, shining; the head, face con- 
vex, sparingly punctured, with a strigose sculpture at the 
anterior edge of the eye, the vertical puncture is small; the 
thorax, lateral stria is wide, deep, and more deeply sinuous 
than that of 7. pinguis, and the edge of the thorax is also 
deeply sinuous, the sinuosity ending abruptly behind the 
middle forms an obtusely dentate projection behind it; 
before the scutellum the punctures leave a narrow irregular 
smooth space not well defined, behind the eye is a distinct 
impression ; the elytra. very narrowly smooth at the base, 
and the pygidia are more clearly punctured than those of the 
last species, especially the pygidium ; the prosternum is not 
straight in front, but feebly cut out in a bow-shaped outline 
from angle to angle, feebly incised at the base, stria complete 
at the sides and front, margin slightly raised ; the meso- 
sternum is sulcate at the sides, obtusely pointed anteriorly ; 
all the sternal plates are evenly punctured, the punctures 
well separated from each other; the anterior tibie 5-dentate, 
teeth not prominent. 
Hab, Cameroon. 
Trypobius cylindraceus, sp. n. 
Elongatus, cylindricus, niger, nitidus; capite convexo; thorace 
antice haud foveolato ; prosterno antice late emarginato; meso- 
sterno utrinque sulcato ; tibiis anticis 5-dentatis. 
Tie mill, 
Elongate, cylindrical, black, shining; the head, face convex, 
very polished, minutely strigose at the eyes, I rather sparsely 
punctured, vertical puncture very small; clypeus bisinuous ; 
the thorax much more densely punctured than the last species, 
with a narrow sinuous impression behind the eye, lateral stria 
deep, sinuous, but the prominent angle is not conspicuous like 
that of 7. ethiops; the elytra not quite so densely punctured 
as the thorax ; the propygidium and pygidium are densely 
punctured; the prosternum is entirely emarginate in front, 
feebly incised at the base, widest in front, narrowed behind, 
lateral stria straight and transversely joining in front; the 
mesosternum is obtuse anteriorly, the metasternum canalicu- 
late in the middle, all the sternal plates similarly punctured ; 
the anterior tibiee 5-dentate. 
This is the smallest and narrowest species of this series. 
Hab, Cameroon. 
