MR. A. MURRAY'S MONOGRAPH OF THE FAMILY OF NITIDULARLE. 267 
15. COLASTUS DISCOIDEUS. 
Erichs. in Germ. Zeitschr. iv. 239 (1843). 
Strongylus bipustulatus, Dej. Cat. 
Depressus, niger, subtiliter pubescens ; elytris fortiter striato-punctatis, rubris, nigro 
cinctis; pedibus piceis. Long. 2 lin., lat. 14 lin. 
Habitat in Cayenne. 
Scarcely longer than C. bimaculatus, and about a half broader, depressed, black, shining, 
sparingly and slightly griseo-pubescent. Antennz black, with the two basal articles 
testaceous. Head densely and deeply punctate; labrum piceous. Thorax short, with the 
base sinuate on each side, the sides rounded, sparingly but strongly and deeply punctate 
on the disk, the posterior angles marked with an impression near the base. Scutellum 
strongly punetate. Elytra closely and strongly punctate-striate, with a large deep-red 
bloteh occupying the base and the disk, its outer side running straight and parallel to 
the margin, which is narrowly black, its apical side forming a right angle with the outer 
margin and running parallel to the apex for a short distance, then rounding-in towards 
the suture and running up to the scutellum and parallel to it; the black apical margin 
is broader than the lateral edging. Abdomen densely punctate. Body below closely but 
faintly punctate. Tarsi ferruginous. 
Like C. bimaculatus, but still broader and more coarsely punctate. It is less pubescent, 
rather more convex, and with a coarser and closer punctuation on the pygidium and 
the segments of the abdomen. 
From Cayenne. Also collected by Mr. Bates on the Amazons. . 
16. COLASTUS VETUSTUS. 
Similis C. vulnerato Er. statura et colore, sed major; differt in elytris haud striato-punc- 
tatis: leviter convexus, niger, pubescens, opacus; elytris planis, irregulariter leviter 
haud seriatim punctatis, plaga basali obliqua rufa; pedibus piceis. Long. 1# lin., 
lat. 1 lin. 
Habitat in Brasilia. 
Similar in form and colour to C. vulneratus. Slightly convex, opaque, lightly punc- 
tate, and clothed with plentiful long fulvous pubescence. The head is faintly punctate, 
and has a round impression on each side in front. The thorax is short, transverse, 
much narrower in front than behind, rather convex above, and with the sides much 
rounded, the posterior angles projecting much backwards. Scutellum sparingly punctate. 
The elytra are not punctate-striate, but covered with an irregular fine punctuation; the 
patch of red is duller in colour than in C. vulneratus, and extends backwards parallel to 
the suture for about two-thirds of its length, separated from it by a space equal to the 
breadth of the scutellum, and extending outwards at the base beyond the shoulder. Ab- 
domen thickly pubescent and faintly punctate. Antenne fuscous. Legs fulvous. 
Readily distinguished from any of the similarly marked species by the elytra not being 
punctate-striate but irregularly punctate. 
From Brazil. 
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