488 | BRUCHIDES. 
extension in the longitudinal direction, and the constriction behind them being remark- 
ably deep and abrupt. The thorax is very short, very greatly narrowed in front, its 
sculpture quite fine, the surface very pubescent, the pubescence obscurely variegate, 
the surface a little uneven, owing to a slight elevation extending along each side of the 
obscure median furrow, and a basal depression on each side external to this. Elytra 
deeply striate, the strie with closely placed elongate punctures ; the colour varying 
from reddish to fuscous-red or fuscous, more or less minutely and irregularly flecked 
with white pubescence. Front and middle legs almost entirely yellow ; femora marked 
with fuscous. 
Twelve examples were captured : these exhibit no sexual marks, either in the structure 
of the ventral rings, or in that of the antenna. These latter organs are shortly 
pectinate from the sixth joint outwards, the fifth joint being triangular. Possibly all 
the individuals are females. ‘The clothing of the under-surface, though pallid, is not 
pure white. The colour of the surface, independent of the clothing, is evidently very 
variable. Our artist has not delineated the peculiar postocular structure. 
110. Bruchus leucosomus. 
Brevis, niger; pedibus anterioribus elytrisque rufis, his plus minusve late nigro marginatis, tarsis pedibusque 
posterioribus rufo-nigris; corpore minus variegato, supra parum, subtus densissime, albido-tecto ; 
elytris fortiter regulariterque striatis; antennis maris longius flabellatis, femine breviter pectinato- 
serratis. 
Long. 24 millim. 
Hab. Mexico, San Andres Tuxtla (Sallé); GuaTema.a, San Gerénimo (Champion) ; 
Panama, David (Champion). 
Antenne entirely black. Head very abruptly constricted behind the eyes, without 
any trace of denticle. Thorax very coarsely punctate, black; the white pubescence of 
the under-surface though extending upwards, becoming scanty at the sides, and there 
is a feeble line of pallid pubescence along the middle; the inequalities of the surface 
are very slight. Elytra rather short, with very deep striae, which are crenate, owing to 
the confluence of the coarse punctures they bear; of a dark red colour, margined at 
the suture as well as at the sides with black, and with only a feeble white pubescence. 
Pygidium and under-surface densely clothed with white pubescence, the former with a 
transverse black line on the middle. Hind femora and tibize bearing externally much 
white pubescence. 
This species is easily identified. Only five examples have been obtained, and from 
these it is evident that the extent of the red colour on the wing-cases is variable. The 
species was ticketed Bruchus propygidialis, Chevr., in Sallé’s collection. One male and 
two female examples have been received from Mexico, and a single individual in each 
case from Guatemala and the State of Panama. 
