276 MR. A. MURRAY'S MONOGRAPH OF THE FAMILY OF NITIDULARLE. 
31. COLASTUS POCULARIUS. 
Oblongus, valde depressus, piceo-niger, subnitidus, glaber, leviter punctatus; thorace 
disco impunctato longitudinaliter excavato; elytris striato-punctatis ; antennis pedi- 
busque fulvis. Long. 2 lin., lat. £ lin. 
Habitat in Brasilia. 
Oblong, excessively depressed, nigro-piceous, somewhat shining, glabrous; lightly 
punctate, the elytra more strongly punctate-striate. Head depressed, lightly and 
sparingly punctate, with a curved impression in front. Thorax transverse, subquadrate, 
the sides gently declined, subparallel, narrowed and rounded in front, lightly and 
sparingly punctate, the disk impunctate and hollowed out longitudinally, the posterior 
angles almost right angles, the anterior declined and obtuse, with the base lightly sinuate 
on each side. Scutellum large, very faintly punctate towards the base, the remainder 
smooth. Elytra subquadrate, flat, punctate-striate, with the apex somewhat oblique and 
rounded, truncate. Pygidium and other abdominal segments lightly punctate. Antenne 
and legs fulvous. 
One of the very flat, scale-like species, not much thicker than a piece of paper. The 
large, cup-like, impunctate hollow in the middle of the thorax (which suggested its name) 
readily distinguishes the species. 
From Rio Janeiro. I have seen only one specimen, which is in the collection of Pro- 
fessor Boheman of Stockholm. 
B. Black, with rufous marking on thorax and abdomen. 
32. COLASTUS SIGNATICOLLIS. 
T m Q2. 7g. 42. 
Depressus, oblongo-ovatus, subnitidus, punetatus, pube brevissima fulva vesti- Ld 
tus, pieeo-niger; capite, vertice, thorace linea dorsali longitudinali basin 
versus, pectore et abdomine medio et supra et subtus ferrugineo-rufis ; 
thorace lato; elytris seriatim punctatis; pedibus ferrugineo-rufis. Long. 
21 lin., lat. 14 lin. 
Habitat in Provincia Sancte Catharine in America meridionali. 
Oblong-ovate, depressed, shining, punctate, clothed with a very short fulvous pubes- 
cence, black or nigro-pieeous. Head broad, strongly but not thickly punctured, most 
so towards the sides; the vertex with a bright rufous spot. Antennz rufous, club 
piceous or ferruginous. Thorax black, with a rufous longitudinal streak immediately 
before the scutellum, transverse, narrowed in front, much declined towards the anterior 
angles, flat and somewhat sparsely punctured on the disk, thickly on the sides, which 
are lightly rounded, all the angles obtusely rounded, broader than the elytra at the base, 
the base truncate and scarcely sinuate. Scutellum rather thickly punctate, except at 
the apex. Elytra flat, punctate in close rows, which in some instances are a little 
irregular, the sides inflexed ; apex of each elytron little rounded, nearly straight, except 
at the exterior angles. Abdominal segments punctate above, each with a rufous patch 
in the middle before the posterior margin of the segment. The whole of the underside 
rufo-ferruginous, except the sides, which are darker. Legs rufo-ferruginous. 
