BLACKBURN AND SHarp—On some New Species and Genera of Coleoptera. 139 
stems, which in various species of lily and palm are enfolded by the bases of the 
leaves, and contain much moisture. When I have found the insects on flowers, it 
has usually been on large flowers with fleshy petals, some portion of which has been 
in a state of decay. 
_Apical dorsal segment of male, truncate or absolutely emarginate, with short 
supplementary segment. Tarsi of male thicker than of female. Head and thorax 
of male more closely punctured. 
The whole of the above characters seem to be strongly marked only in B. disce- 
dens and metallescens (where the two sexes might pass for distinct species), but I 
can trace two or more of them in the others. The curvature of the front tibiz in 
B. vestitus (and doubtless in B. parallelus) appears in both sexes. 
The specimen of B. vestitus described by Dr. Sharp was, I think, a female; in 
the male there is a short supplementary segment. 
Group III. 
B. blackburni, Sh. 
This insect seems to be connected with flowers and other vegetable matter 
when in a state of decay. 
Sexual characters very slightly marked, the apical dorsal segment of male being 
truncate or obscurely emarginate behind, with a very indistinct supplementary 
segment. 
Group LY. 
B. robustus, Sh.; guttatus, Sh.; sordidus, Sh.; expers, Bl. 
All the species have occurred on large solid trees, usually at exuding sap. 
Sexual characters slight. There is a more or less distinct supplementary segment 
in the male, and this sex is usually smaller and narrower than the female. 
Groupes V. anp VI, 
B. reitteri, Sh.; infimus, Sh. ‘ 
These insects are found in very wet vegetable matter; one of them between 
the layers of banana stems, the other under the thin bark or rind of what I believe 
to be a species of bamboo. 
Sexual characters very well defined (see Dr. Sharp’s descriptions). I may add 
that in B. infimus the supplementary segment of the male is of remarkable form, 
being abruptly vertical. 
