* 
270 MR. A. MURRAY'S MONOGRAPH OF THE FAMILY OF NITIDULARLE. 
Broad, suboval, somewhat depressed, somewhat shining, sparingly clothed with a short 
fulvous pubescence, black. Antenne rufous, with the club fuscous. Head thickly and 
deeply punctate, piceous, with the mouth rufous. Thorax not twice as broad as long, 
with the base subsinuate on each side, the sides rounded, the disk sparingly, the sides 
thickly and deeply punctate. Scutellum sparingly punctate, smooth at the apex. Elytra 
a half longer than the thorax, regularly punctate-striate. Abdomen above thickly punc- 
tate and with the last three segments wholly visible. Legs rufo-testaceous. The abdo- 
men in the male has the pygidium above subacuminate at the apex and the last segment 
below deeply impressed with a longitudinal fovea. 
This species is nearly allied to C. macropterus, but broader, has the pubescence more 
sparing and shorter, and the thorax not so short and more densely punctate on the sides ; 
it is, moreover, distinguished from all the remaining species by the longitudinal fovea 
on the underside of the last segment. This may possibly, however, be only a sexual 
character, but it is one which enables it to be most easily identified. It is more elongate 
than the neighbouring species, and has the thorax more convex, more shining, and less 
punctate. 
From Columbia and Brazil. 
21. COLASTUS MORIO. 
Nitidula nigra (Melsh. Cat.). Fie. 35 
Cercus niger, Say, in Journ. Acad. Nat. Sc. Philad. iii. 195 (1823). em 
C. morio, Erichs. in Germ. Zeitschr. iv. 242 (1843). 
Subdepressus, niger, griseo pubescens; antennis basi pedibusque rufis ; 
thorace crebre punctato, basi profunde fovea curvata utrinque im- 
r T PE 8 p : 2 [This cut gives the gene- 
presso ; elytris striatim punctatis ; abdomine supra segmentis tribus ral effect, but the detail 
JE . : of the outline are not to 
expositis. Long. 2+ lin., lat. 14 lin. be depended on.] 
Habitat in Pennsylvania et Mexico. 
Var. tucens. Minor, minus latus; thorace fovea curvata basali minore, angulis posticis 
profunde foveatis; abdomine supra segmentis duobus fere solum expositis; pedibus 
piceis. Long. 2 lin., lat. 11 lin. 
Habitat in America meridionali. 
Var. perroratus. Crebrius punctatus, punctis minoribus ; thorace fovea curvata fere 
obliterata; abdomine supra segmentis tribus expositis. Long. 2 lin., lat. 1 lin. 
Habitat apud Bahia. 
Broad, short, ovate, subdepressed, black, somewhat shining, densely clothed with a 
fulvo-griseous pubescence. Antenne rufous at the base, piceous at the apex. Head 
thickly punetate. "Thorax very short, truncate at the base, much narrowed in front, à 
little rounded on the sides, thickly, strongly, and deeply punctate, with the base depressed 
and marked with a deep, closely punctate, curved depression on each side, reaching into 
the posterior angles, which are nearly right-angled. Scutellum thickly punctate. + Elytra 
a half longer than the thorax, rather strongly punctate in rows or sometimes in strise. 
Abdomen above thickly punctate, pygidium more coarsely than the preceding segments; 
