MR. A. MURRAY'S MONOGRAPH OF THE FAMILY OF NITIDULARLE. 281 
somewhat inflexed towards the anterior angles; the disk flat, with four rows of punc- 
tures in the middle, reaching neither to the front nor the base; the interstices impunc- 
tate, but the spaces on each side irregularly punctate. Scutellum triangular, punctate, 
except a narrow shining margin. Elytra about a half longer than the thorax, punctate- 
striate; the interstices not punctate; the apex of each elytron truncate and slightly 
rounded, the margin not much inflexed nor much rounded. Pygidium very slightly 
punctate. 
From Brazil. In the collection of Professor Boheman. 
B. Texture dull and shagreened. 
42. COLASTUS UNICOLOR (OBSCURUS, Erichs.). 
Carpophilus unicolor, Say, in Journ. Acad. Philad. v. 183 (1825). 
Colastus obscurus, Erichs. in Germ. Zeitschr. iv. 244 (1843). 
Oblongus, depressus, niger, pubescens; pedibus rufis; elytris dense ruguloso-punctatis, 
macula humerali obsoleta rufescente. Long. 21 lin., lat. $ lin. 
Habitat in Carolina meridionali in America boreali. 
Oblong, depressed, black, subopaque, fulvo-pubescent. Antenne rufous, club piceous. 
Head punctate-rugose, in front foveolated on each side, wholly rufo-piceous, or some- 
times with the front blackish. Thorax truncate and bisinuate at the base, somewhat 
rounded on the sides, closely punctate, with the lateral margin slightly translucent, all 
the angles obtuse, the posterior angles projecting baekwards. Scutellum closely punctate. 
Elytra closely punctate, subrugulose, with an obsolete humeral spot and the apical margin 
piceous. Abdomen densely punctate, the segments margined with piceous. Legs rufous. 
This has the close, fine punctuation common among the Carpophili, as well as a good 
deal of their general appearance, which no doubt misled Say into describing it as a species 
of that genus. 
From the Southern States of North America. 
y. Texture soft, not shagreened. 
43. COLASTUS INFIMUS. 
Erichs. in Germ. Zeitschr. iv. 245 (1843). 
Nitidula truncata, Randall, in Boston Journ. ii. 18 (1838). 
(Colastus truncatus, Leconte, in Col. Lake Superior, 222 (1850).) 
Ovatus, subdepressus, leviter punctatus, griseo pubescens, niger ; capite thoraceque piceo- 
testaceis ; elytris subtiliter punctatis, testaceis, limbo laterali postice latiore apicalique 
nigris; pedibus testaceis. Long. 1-1} lin., lat. $ lin. 
Habitat in America boreali. 
Shortly ovate, depressed, subopaque, griseo-pubescent, black. Antenne rufous, with 
the club fuscous. Head faintly punctulate, piceous, with the mouth rufous. Thorax 
a little narrower in front than behind, the sides rounded, finely punctate, rufous, with 
the disk generally piceous, anterior angles declinate, all the angles rounded, the base 
subsinuate on each side, and narrower than the base of the elytra. Scutellum faintly 
