64 HETEROMERA. 
a shorter apical joint; and the elytra are relatively shorter and have the strie (especially 
on the basal half of the disc) more finely punctured. 
The extraordinary sexual characters exhibited in the male are, so far as I am aware, 
different from those of any known species of Coleoptera:—The anterior tibie are 
outwardly curved (the reverse to the usual way), and the groove, instead of being 
upon the outer or inner edge (as usual, when present), is upon the upper face. 
** Eyes large; size larger; upper surface unicolorous, violaceous-black. 
9 pp 
3. Sphragidophorus singularis. . 
Very elongate, rather convex, opaque, black, with an indistinct violaceous tinge, the elytra of a browner tint 
towards the base. Head with a few setiferous punctures at the base and sides, for the rest smooth ; eyes 
convex, moderately large, rather distant from the base of the head, the latter a little extended on each side 
behind them; antenne long, rather stout, black (the apical joint broken off); prothorax cylindrical, much 
longer than broad, the sides completely immarginate, narrowing somewhat obliquely in front, and mode- 
rately constricted behind, the hind angles acute and very prominent, the basal margin much raised, the 
surface smooth, except for a deep puncture on each side behind, and an indistinct one on each side before, 
the middle of the disc ; elytra with shallow intrahumeral depression, very long, subparallel in their basal 
half, each with an oblong very opaque lateral depression (almost destitute of sculpture) some distance 
beyond the middle, finely punctate-striate, the punctures becoming a little coarser towards the sides and 
finer towards the apex, the striae not extending to the apex, the interstices flat, the first with five or six 
(very irregularly scattered between the base and apex, those towards the apex the deepest), and the third 
with two (near the apex), setiferous punctures, the apices obtuse ; beneath black; legs smooth, black, 
very long; the posterior femora somewhat flattened, their inner face grooved along the lower edge from 
about the middle to the apex. 
Length 11 millim.; breadth 2? millim. ( 9.) 
Hab. Paxama, Volcan de Chiriqui (Champion). 
A single female example. This insect has a different facies from any species here 
referred to Statira. The elytra have an oblong very opaque depression (almost destitute 
of sculpture) at the sides, as in the opposite sex of S. cyanipennis and S. violaceus and 
certain other South-American forms; the male doubtless has this depression much 
larger. The posterior femora are grooved and somewhat flattened. S. simgularis may 
be further distinguished by its opaque violaceous-black colour, very elongate shape, 
cylindrical and immarginate thorax, the hind angles of which are acute and very pro- 
minent, and other details noticed above. 
MENISCOPHORUS. 
Last joint of the maxillary palpi subtriangular, its outer side a little longer than the apical side ; last joint of 
the labial palpi broad and crescentiform, its apical side very deeply concave-emarginate ; ligula prominent, 
emarginate in the middle and rounded on each side in front; mentum trapezoidal, transverse ; outer 
lobe of the maxille broad; mandibles bifid at the apex; antenne stout, with joints 3-10 about equal in 
length and breadth, and each moderately widened (but not serrate) towards their apex, 11 about as long 
as 9 and 10 united in the female, and only a little longer in the male; eyes convex, moderately large, 
somewhat widely separated; head obliquely narrowed behind the eyes and then constricted into a neck ; 
