254 HETEROMERA. 
slender than P. canescens, the antenne much shorter and more clavate, the head 
smaller and narrower. ‘The darker legs, smaller head, less transverse thorax (the sides 
of which are less rounded, and the base is more produced in the middle behind), and 
shorter antenne distinguish it from P. flavipes. The base of the thorax is somewhat 
strongly bisinuate, and the tarsi are slender. This species also would appear to be 
allied to P. fuscula, Lec., the description of which (copied by Smith) is insufficient 
for identification *. | 
5. Pentaria bicincta. 
Very elongate, testaceous ; the elytra with a brownish or piceous fascia just beyond the middle, and another a 
little before the apex (the former extending upwards at the suture and at the sides, the latter not reaching 
the lateral margins, and in one example not reaching the suture), and the base on either side of the suture 
slightly infuscate; the upper surface opaque, finely pubescent, the prothorax and elytra finely transversely 
strigose. Head moderately large, the eyes black; antenne testaceous, rather slender, elongate (extending 
beyond the base of the prothorax when the head is extended), thickening outwardly, joints 3 and 4 com- 
paratively long, subequal, 9 and 10 about as broad as long; palpi pale testaceous; prothorax about 
one third broader than long, bisinuate at the base, feebly rounded at the sides, the hind angles sharply 
rectangular; beneath fusco-ferruginous ; legs entirely testaceous. 
Length 3-4 millim. (¢ 9.) 
Hab. Mexico, Pinos Altos in Chihuahua (Buchan-Hepburn). 
Two examples. The largest of the Central-American species of the genus. It differs 
from the following, P. trisignata, in its more elongate shape (the elytra being relatively 
much longer) and less distinct markings, those at the base of the elytra being scarcely 
visible, and the others much less extended (in one example the median fascia is almost 
obliterated); the legs and antenne are paler; and the fifth ventral segment in the male 
is unemarginate. ‘The longer and more slender antenne and the different pattern of 
the elytra distinguish it from P. trifasciata. The sixth ventral segment is not visible. 
6. Pentaria trisignata. (Tab. XI. fig. 2.) 
Moderately elongate, rather broad; the head and prothorax ferruginous; the elytra testaceous, with a broad 
median fascia, which extends forwards along the suture and also at the sides, and is connected at the 
suture with a broad basal patch, and an anteapical fascia (in some examples not reaching the lateral 
margins, in others extending to the apex), black; the upper surface opaque, very densely and finely 
pubescent, the prothorax and elytra finely transversely strigose. Head moderately large, the eyes black ; 
antenne testaceous or fusco-testaceous, comparatively long (reaching beyond the base of the prothorax 
when the head is extended), rather slender, thickening outwardly, joints 3 and 4 elongate, subeqnal, 5-10 
increasing in width but decreasing in length, 9 and 10 about as broad as long; palpi testaceous ; prothorax 
about one third broader than long, feebly bisinuate at the base, a little rounded at the sides, the hind angles 
rectangular; beneath ferruginous or flavo-ferruginous, the venter, and sometimes the metasternum also, 
infuscate or piceous ; legs testaceous or fusco-testaceous, moderately slender; fifth ventral segment trian- 
gularly emarginate at the apex and the sixth well exposed in the male, the anterior tarsi slender in 
this sex. 
Length 2$-33 millim. (3 @.) 
Hab. Muxico, Guanajuato (Sallé). 
* «“ Body entirely fuscous or piceous, legs and base of antenne paler.” 
