COLEOPTERA. 
135 
reaching little more than the size of the smallest individuals of that spe¬ 
cies, which are not more than half the size of the largest: its thorax is less 
convex, and the subfasciform black patch of the elytra is much broader, 
darker, more clearly circumscribed and otherwise shaped. 
Head transverse, immersed to the eyes, with the vertex most narrowed 
hy the eyes in the middle; slightly punctulate. Eyes large, black, sub- 
circular, slightly convex, deeply angularly emarginate, somewhat oblique ; 
three-fourths of their transverse diameter being on the upper side; they 
narrow the vertex somewhat above the middle of its length, in such a man¬ 
ner that it hardly occupies a quarter of the total breadth circumscribed by 
them. Rostrum as broad as the head, but much shorter, transverse, sides 
rather roundly narrowed from the middle to the apex (which is scarcely 
emarginate), margined ; the margin thinly cariniform, not extending to the 
bottom of the emargination of the eyes, where it is acutely angular (with 
the angle rounded), thence perpendicularly directed beneath, margining 
the antennal groove very close to the eye, leaving a very narrow space > 
antennal groove ovate-conic, perpendicular, having its acute angle 
beneath ; upper side of the rostrum longitudinally rugulose. Labrum 
proportionally large and exserted, raised at the apex, dark rufous. 
Mandibles exserted, incurved, wide, acute, black. Palpi dark rufous. 
Antennce very slender; 1st and 2nd joints subequal, subovate, nearly 
as thick as the width of the club ; 3—8 extremely thin, cylindric, hardly 
clavate at their tip, gradually more slender, the first of them the longest. 
Club elongate, 3-jointed ; joints distant, the apical the longest and 
narrowest. 
Thorax transverse, one-third shorter than broad, subconic, with the 
apex one-third narrower than the base, which is very slightly sinuate; 
angles subacute; posterior carina running near to the base, but more 
sinuated, thin, raised, its angles rounded, then directed upwards and termi. 
nated at the middle of the sides, which are roundly narrowed towards the 
apex ; this is obliquely truncate, thinly margined on the sides of the disc 
and beneath ; upper side very convex transversely, slightly pulvinate near 
the apex, transversely shallowly impressed above the middle, with a small 
longitudinal elevation behind that impression, terminating obsoletely near 
the posterior carina; a shallow impression is also observable at each side 
of the base of that elevation ; finely punctulate ; almost covered with an 
uniform ashy brown or grayish pile, showing some obsolete fuscous spots; 
two of which are close to each other at the apex, two somewhat under the 
