ON THE COLEOPTEROUS GENUS HOLOPARAMECUS, 3 
Female.—Usually rather larger than the male, slightly more 
elongate and depressed. Eyes less convex. Antenne 10-jointed, 
third joint rather shorter, apical joint slightly larger. The 
impressions at the base of the prothorax are deeper, especially 
the longitudinal furrows; the discal fovea is deeper and com- 
paratively larger, and the oblique impressed lines upon the elytra 
are more distinct. Length, 1—12 mm. 
This species appears to be a true in-door insect: all the 
specimens I have examined were captured either among packing- 
cases, old boxes, &c., in warehouses, or other similar localities. 
HOLOPARAMECUS SINGULARIS, Beck. 
Male.—Reddish testaceous, very slightly depressed, shiny, 
finely pubescent. Head sparingly punctured. Eyes very small, 
projecting. Antenne 9-jointed (similar to those of H. depressus, 
Curtis). Prothorax considerably broader than the head, convex, 
slightly narrowed behind, but not constricted; posterior angles 
obtuse, not elevated; with a large fovea on each side at the base, 
and a narrow transverse luniform impression between and nearly 
joining them. LElytra broader than the prothorax, finely and not 
very distinctly punctured in irregular rows; humeral prominences 
distinct ; sutural stria straight, effaced posteriorly. Length, 
1 mm. 
This species differs from H. depressus, Curtis, in having the 
prothorax only shghtly narrowed and not constricted behind, in 
the shape of the basal impressions, and in the absence of the 
discal fovea; another difference, and this will serve to distinguish 
it at once, is the minuteness of its eyes. 
The specimen described above is a male, and was taken by 
myself under a piece of wood placed upon the remains of a hot- 
bed in a garden at Holmwood, Surrey, on September 17th of the 
present year. 
Secrion B.—Antenne 11-jointed in both sexes (Calyptobium). 
HoLopARAMECUS CAULARUM, Aubé. 
Testaceous, elongate and shining, very finely and sparsely 
pubescent. Head small, very finely punctured, somewhat 
rounded in front. Eyes moderately large, convex. Antenne 
composed of eleven joints: the first and second rather large and 
thickened towards the extremity, the third to eighth subglobose 
