22 
INSECTA SAUNDERSIANA. 
Pachymerus plagicqrnis, JeJcel. 
Subovatus , piceus , infra sparsim obscure cinereo , supra brunneo fusco al- 
boque variegatim tomentosus ; antennarum basi apiceque , pedum anti¬ 
corum maxima parte pectorisque maculis lateralibus dilute ferrugineis; 
pygidio basi ferrugineo medio albido maculato , apice piceo grosse 
punctato, cum puncto albido infra maculam basalem; segmentis 
abdominis utrinque puncto albido notatis; femoribus posticis magnis , 
crassis , infra ante apicem quinque-dentatis, dento primo majore , 
penultimo reliquis insigniore ; thorace medio longitudinaliter elevato 
canaliculatoque , basi utrinque calloso ; elytris basi conjunctim quadri- 
callosis , medio impresso-deplanatis , remote punctato-striatis. 
Longit. cum pygid. obliq. (cap. infl.) If lin. = 4 millim. 
Latit. ant. med. el. 1| lin. = 2-^ millim. 
Patria : -(Americanus certe : potius e Brasilia ?) 
Exactly the habit and form of Pack. Brasiliensis , Sch., but only one- 
third of its size: about the width of Br. Pisi , but much shorter. 
Head oblong-subquadrate, transversely impressed and strangulated 
somewhat behind the eyes, where it forms a sort of neck, which is trans¬ 
verse, and about half of the length of the front; from the posterior im¬ 
pression a high ridge rises in the middle of the head, passing through the 
front, obsoletely continued half the length of the rostrum ; densely punctate- 
subalutaceous, pitchy, scattered with a short brown pile. Eyes ample, semi¬ 
lunar, rather emarginate in front, obliquely approaching towards the base 
of the rostrum, leaving the front conically narrowed at its apex ; pitchy 
brown. Rostrum elongate, narrow, somewhat narrower than the head be¬ 
hind the eyes, but as wide as the neck, not much shorter (labrum excluded) 
than the head with its neck, and half as long again as its own width, sub- 
linear at the sides, truncate at the apex ; its lateral margin angularly 
elevated and ridged; lateral sides canaliculate or impressed from the eyes 
(at the insertion of the antennas) to the base of the mandibles; inferior 
margin rounded, coarsely punctate; upper part punctulate-subalutaceous ; 
pitchy, with the lateral sides rufescent; covered with long, thin, oblique 
whitish hairs, tying flat and distant from each other. Labrum transverse, 
subsemicircular, shining, punctulate, with some very thin, rather long hairs 
at each side. Mandibles dark ferruginous, acute. Maxillary palpi black ; 
remaining parts of the mouth , with the labial palpi , light ferruginous. 
