208 MR. A. MURRAY'S MONOGRAPH OF THE FAMILY OF NITIDULARLE. 
are very small, and confined to the anterior corners. Anterior tibiæ in some species 
distorted in the males. The first three articles of the tarsi dilated, clothed with hairs 
below. Claws simple. 
5 112000018 
Position and Affinities.—CaAnrornirvs. COLASTUS. 
f BRACHYPEPLUS. 
PsILOTUS. 
HyxPODETUS. 
For convenience’ sake I propose to divide the genus into two subgenera, containing 
respectively 
1. The species in which the anterior tibiz are distorted in the males—CyLLopopEs; and 
2. The species in which they are not so distorted — Corasrus proper. 
Subgenus CYLLOPODES (club-footed). 
(See Plates XXXIII. fig. 9, and XXXIV. figs. 1 c*, 1 c**, 1 c***.) 
Caput latum, declive. "Thorax postice quadratus, angulis plus minusve rotundatis. Maribus tibiæ antice 
angulatim distortze et thorax elytris plerumque latior. 
Head broad between the eyes, bent down, with the posterior angles rounded. The males 
have the anterior tibi: angularly bent, and widened and distorted at the apex. In most 
of the species the males also have the thorax broader than the elytra. 
1. CoLastus RUPTUS. (Plate XXXIV. fig. 1c*.) 
Erichs. in Germ. Zeitschr. iv. 237 (1843). 
Testaceus, nitidus, tenuiter seriatim rufo-pubescens; thorace lateribus dilatato; elytris 
crebre seriatim punctatis, apice nigris. Long. 11 lin., lat. 2 lin. 
Habitat in Venezuela, Brasilia, &c. 
Oblong, very slightly convex above, bright reddish testaceous, shining, slightly clothed 
with a pale reddish pubescence. Antenne testaceous, with the club fuscous. Head 
densely and rather closely punctate. Thorax bisinuate at the base, gently rounded on 
the sides, pretty deeply but sparingly punctate; dilated in the males. Scutellum rounded 
at the apex, sparingly punctate. Elytra a half longer than the thorax, rather closely 
punctate and pubescent in rows, the apex black. Abdomen more densely punctate. 
The anterior tibiæ in the males distorted, as if broken at an angle below the middle, and 
abruptly dilated on the inner side. 
Very like the next species, C. posticus, which is found in Mexico, and from which it 
differs in being pubescent and rather more coarsely punctate. 
From Venezuela and Brazil, &c. 
2. CorasTUS POSTICUS. (Plate XXXIV. fig. 1.) 
Erichs. in Germ. Zeitschr. iv. 237 (1843). 
Nitidus, subglaber, ferrugineus; thorace maribus dilatato ; elytris crebre seriatim punc- 
tatis, nigris, basi ferrugineis. Long. 14 lin., lat. 1 lin. 
Habitat in Mexico. 
Of the size and appearance of C. rwptus. Above slightly convex, ferruginous, shining. 
