208 MR. A. MURRAY'S MONOGRAPH OF THE FAMILY OF NITIDULARLE. 
17. COLASTUS CONSOBRINUS. 
Subdepressus, piceus, elytris disco piceo-testaceis, fulvo pubescens; capite crebre et 
leviter, thorace sparsim et fortiter punctatis; elytris leviter punctatis, vix striato- 
punctatis; pedibus piceo-ferrugineis. Long. 2 lin., lat. 15 lin. 
Habitat in Brasilia. 
Broad, subdepressed, subopaque ; thorax somewhat convex. Elytra flat, piceo-testaceous 
on the disk, fulvo-pubescent; head darker. Antennze piceous, with the basal articles 
piceo-testaceous, second article palest. Head thickly but not coarsely punctate. Thorax 
short, more than twice as broad as long, somewhat shining, coarsely and sparsely punc- 
tate, more densely towards the sides; sides gradually rounded towards the front, but 
less rapidly than in its allies, bisinuate at the base; posterior angles projecting behind. 
Scutellum longer than broad, rounded at the apex, finely and closely punctate; a narrow 
margin at the apex not punctate. Elytra about a half longer than the thorax; sides 
parallel, depressed, closely and finely punctate, the punctures with a slight tendency 
to run into rows; the disk of each elytron paler than the suture and margins, the pale 
portion not well defined, rather elongate and somewhat oblique, lying parallel to the 
sides of the scutellum. Abdominal segments finely punctate. Underside piceous. Legs 
piceo-ferruginous. 
Allied to 0. discoideus and 0. vetustus, but distinguished from the former by the 
punctuation on the elytra being close and scarcely striate, and from the latter (which 
also has the punctuation on the elytra without rows) by the greater breadth of the thorax, 
which is less rapidly narrowed in front ; the pubescence also is shorter, and the punctu- 
ation on the elytra is more distinct, and with a slight tendency to rows, which the other 
has not. Iam not wholly free from doubt, however, whether it may not turn out to be 
the female of C. vetustus. 
From Rio Janeiro. Collected by the Rev. Hamlet Clark, who has liberally sacrificed 
his unique specimen to the British Museum. 
18. CoLASTUS DISPAR. 
Oblongo-ovatus, subdepressus, subopacus, fortiter parce punctatus, niger, pubescentia 
longa grisea sparsim vestitus; thorace prope medium utrinque lineis irregularibus 
vel spatiis parum elevatis impunctatis instructo; elytris seriatim punctatis et pubes- 
centibus, maribus nigris, fæminis ferrugineis limbo apiceque nigris; subtus valde 
pubescens; antennis pedibusque rufo-piceis. Long.21 lin., lat. 11 lin. 
Habitat in Mexico. 
Rather elongate, oblong-ovate, somewhat depressed, somewhat opaque, black, coarsely 
but sparsely punctate, clothed with a long, scattered griseous pubescence, very thickly 
below. Thorax nearly twice as broad as long, subconvex, narrower in front than behind, 
emarginate in front, the sides somewhat parallel behind, rounded in front, base bisinuate, 
the posterior angles nearly right-angled; on the disk there is a longitudinal irregular 
dorsal line or space, narrowed at each end, more closely punctate than the rest, with a 
gently curved, smooth, impunctate, slightly raised space on each side, then another punc- 
