MR. A. MURRAY'S MONOGRAPH OF THE FAMILY OF NITIDULARIA. 261 
rounded; the sides margined, and slightly hollowed at the middle just inside the margin ; 
the base scarcely sinuate; apex broadly emarginate and slightly sinuate. Scutellum 
rounded, impunctate at the apex, slightly punctate at the base. Elytra subparallel, 
lightly punctate in rows; the suture depressed, giving the appearance of a stria along- 
side it; the pale-red patch reaches from the scutellum to fully a fourth of the length of 
the elytra from the apex. Abdominal segments lightly acicularly-punctate. Antenne, 
body below, and legs piceous. The anterior tibiz less acutely bent (in the males ?) than 
in the other species of this section. 
I have only seen two specimens; and the anterior tibiæ are distorted in both; hence I 
assume them to be males. The thorax was not dilated in these. 
From Columbia. 
There is a single specimen in the collection of Professor Boheman of Stockholm, and 
one in Dejean's collection in the possession of the Marquis de la Ferté. It stands there 
under the name of Ips biplagiata, with the synonym of Cercus biplagiatus of Schónherr, 
and is labelled as having been received by Dejean from Schönherr himself. I cannot 
find, however, that it has been published by Schönherr. 
4. CoLASTUS NIGER. (Plate XXXIII. fig. 9.) 
Elongatus, subparallelus, sat convexus, punctatus, nitidus, glaber, niger, antennis pedi- 
busque nigro-piceis; thorace transverso, subquadrato; elytris crebre seriatim punc- 
tatis; maribus tibiis anticis dilatatis, subdistortis (Pl. XXXIII. fig. 9c). Long. 2 lin., 
lat. 2 lin. 
Habitat in Brasilia. 
Nearly allied to C. biplagiatus. 
Elongate, subparallel, somewhat convex, rather coarsely punctate, shining, glabrous, 
black, the antennze and legs nigro-piceous. Head broad, declinate, sparsely punctate. 
Thorax nearly as in C. diplagiatus, but narrower, nearly quadrate, a very little narrower 
in front than behind, sides subparallel, slightly hollowed in the middle near the margin, 
apex not so deeply emarginate as in C. biplagiatus (not dilated in the only specimen I 
have seen, and which I suppose to be a male). Scutellum large, punctate at the base, 
smooth at the apex. Elytra a half longer than the thorax, subparallel, punctate in rows, 
interstices impunctate, each elytron somewhat longitudinally convex so that the suture 
is slightly depressed, apex of each truncate obliquely inwards and forwards, exterior 
apical angles rounded, sutural angles obtuse. Abdomen finely and acicularly punctate. 
Anterior tibize bent and dilated (in the males ?), the outer margin obtusely angled, straight 
towards the apex, sinuate and curved on the inner side; tarsi much dilated. 
This is the only species of this section (so far as yet known) which is entirely black. 
Both it and C. biplagiatus have a somewhat different facies from the other species, being 
more elongate and with the head broader and more declinate. The specimens being 
unique, I have not ventured to dissect out the ligula, but have no doubt it will be found 
to conform with those of the other species. 
From Rio Janeiro. I have only seen a single specimen of this species. It is in the 
collection of Professor Boheman. 
VOL. XXIV. 2M 
