202 MR. A. MURRAY'S MONOGRAPH OF THE FAMILY OF NITIDULARIA. 
fovea on each side of the base of the thorax; the punctuation is not so close; but in 
other respects it is almost the same as C. morio. 
From Ega, on the Amazons. Collected by Mr. Bates. 
23. COLASTUS MACROPTERUS. 
Erichs. in Germ. Zeitschr. iv. 241 (1843). 
Nitidula macroptera, Fab. Syst. El. i. 354. 35 (1801). 
Subdepressus, niger vel nigro-piceus, nitidus, fulvo pubescens; thorace parce, elytris 
seriatim punctatis. Long. 2 lin., lat. 1 lin. 
Habitat in Brasilia. 
Oblong-oval, subdepressed, pitchy black, fulvo-pubescent. Antenne testaceous, the 
club fuscous. Head thickly punctate, rufo-piceous, with the front blackish. Thorax 
short, scarcely wider than the elytra, more than twice as broad as long, with the base 
subsinuate on both sides, the sides gently rounded, sparingly but strongly punctate, 
fusco-piceous, towards the sides gradually rufescent. Scutellum sparingly punctate, 
nigro-piceous. Elytra a half longer than the thorax, regularly punctate-striate, nigro- ' 
piceous, pubescent in rows, not much wider behind than in front. Abdomen above with 
the last three segments exposed; densely and strongly, below sparingly and faintly punc- 
tate, nigro-piceous, the margins of the penultimate segments rufescent. Breast nigro- 
piceous. Legs rufo-testaceous. 
From Brazil, Amazons, Peru, and other parts of South America. In Mr. Fry’s collec- 
tion there is a small specimen from Mexico which scarcely differs except in size. 
24. COLASTUS LATUS. (Plate XXXIV. fig. 2.) 
Latus, subdepressus, sat nitidus, niger vel piceo-niger, elytris interdum Fig. 37. 
piceo-rufis, parce et longe fulvo pubescens ; antennis piceo-rufis, clava 
nigra; thorace disco parce fortiter, lateribus crebre, elytris seriatim 
punctatis ; pedibus piceo-rufis. Long. 23 lin., lat. 12 lin. 
Habitat in Mexico. 
Broad, subdepressed, black or piceous, shining, sparingly clothed with a longish, flaccid 
griseous pubescence. Antennæ rufous, with the club black. Head thickly and strongly 
punctate. "Thorax wider than the elytra, exactly twice as broad as long, rounded on the 
sides, with the disk sparingly and the sides thickly punctate, and with the base sinuate on 
each side, the middle somewhat raised and prominent. Scutellum coarsely and sparsely 
punctate, smooth at the apex. Elytra a half longer than the thorax, coarsely punetate in 
rows, wider behind than in front; sometimes they are piceous or rufo-testaceous with a 
darker margin all round. Abdomen finely and sparingly punctate above, and with only 
the last two segments and the margin or sides of the third visible. Legs rufo-piceous. 
From Mexico. 
I have seen this species standing in some collections as C. rufipes; but it is much 
broader than rufipes, and, besides various other differences, has not the longitudinal fovea 
on the last ventral segment. It is very closely allied to C. macropterus, but considerably 
larger and with longer pubescence. 
