278 ^^"y- 
crown bebiucl is flat, or rather depressed, and is simply dilated and pro- 
longed into an acute angle on each side ; but in O. corculum, each side 
forms a very broad elevated rim, rounded behind, separated from the 
crown by a deep groove, and overhanging the eye. The head is consider- 
ably wider than the broadest part of the thorax, glossy-black, with the 
labrum pitchy-red, and palpi reddish-testaceous ; it is separated from 
the neck by an impressed line : the antennse have the four basal joints 
testaceous (the basal joint darker in front), and the apical joints 
blackish. The thorax is constricted before and behind, with the 
anterior rather wider than the posterior part, and the central portion 
oval, convex. The elytra have distinctly squared shoulders, and are as 
broad in this part as posteriorly ; the surface is equally convex, and the 
sides are rather abruptly narrowed a little before the apex ; the latter 
is deeply emarginate-truncate, with both angles acute and moderately 
produced, the external one longer than the sutural ; the whole surface 
is punctured, but much more strongly so towards the base, where the 
large impressions tend to form rugae ; the central band is narrow, and 
lies across the elytron, nearly touching both suture and margin ; it is 
partially punctured, and of a tawny hue : the apex is broadly pale, the 
colour advancing along the suture nearly to the middle, and becoming 
more rufous. The under-surface is reddish, the abdomen darker. The 
legs have very few and long bristles. 
Babia ; discovered by Mr. Eeade. 
Ctenostoma aspekulum. — Long. 3f lin. ; lat. elytr. f lin. ? . Elon- 
gate, dilated behind ; bronzed-piceous, shining : elytra very narrow 
at the base, dilated beyond the middle, but not gibbous ; surface 
very coarsely punctured, with the interstices towards the base raised 
in numerous conical tubercles, the middle crossed by a straight pale 
testaceous fascia, and the posterior part of the suture and apex 
broadly pale-testaceous ; each elytron sinuate-truncate, with both 
angles prolonged into spines : posterior angles of the crown 
slightly dilated behind the eyes. 
A small species, very similar in shape and colours to C. pygiiKEum, 
but differing in the tuberculated surface of the elytra and their bispiuose 
apices. The dilatation of the head behind the eyes is obtuse, and of 
small dimensions ; it is separated from the neck by a depression. The 
thorax is distinctly broader before than behind, and the intermediate 
portion is oval and very convex. The elytra are of a pitchy-bronze 
hue, clothed with a few long black hairs ; the sutural spine is rather 
longer than the external one. The legs are pitchy-red, rather darker 
