364 Prof. Westwood on 
apice obtuso, intus basin versus dente maximo quadrato 
armatis ; prothoracis lateribus subrotundatis. 
Long. corp. fere lin. 7; mand. fere lin. 1. 
Hab.—In Insula Maria et littora versus Tasmaniz. 
D. Howitt. In Mus. Oxonie. 
The singularly robust tooth near the base of the inner 
edge of the mandibles, the oblique anterior angles of the 
head, and the rounded lateral margins of the prothorax, 
distinguish the males of this species. 
The whole surface is strongly and closely punctured, 
the punctures of the elytra beimg more elongated and 
occasionally confluent; the head is narrower than the 
prothorax, with a slightly prominent tubercle on each 
side at the base; the anterior angles of the head are 
obliquely rounded off, the posterior portion of this 
lateral margin being thin, and forming the canthus of 
the eye. The labrum is small, and very slightly pro- 
duced; the mandibles are about as long as the head, 
strongly curved and sickle-shaped, the tip obtuse, and 
the inner edge furnished with a large, nearly square and 
flattened tooth, emarginate on its inner edge, as though 
it were formed of two obtuse teeth which had become 
confluent ; beneath, this broad tooth is convex, and finely 
punctured. The mentum is transverse, with the anterior 
angles rounded and the surface punctured ; the protho- 
rax is transverse, wider than the head, and as wide in 
the middle as the widest part of the elytra (which are 
represented in figure 4 as rather too wide across the 
middle) ; the disc of the prothorax has a slight longitu- 
dinal central depressed line, and there is a small rounded 
impression between the middle and the lateral margin ; 
the posterior part of the lateral margins of the prothorax 
are rounded off, but the hinder angle itself, on each side, 
is very slightly produced opposite the humeral angles of 
the elytra. The scutellum is minute, and on each side 
of the suture of the elytra is an impressed longitudinal 
hne, formed by a series of confluent punctures, of which 
also there are several others on each elytron, which do 
not extend beyond two-thirds of their length. The legs 
are moderately slender, the anterior tibiz with five or 
six obtuse teeth on the outer margin, and the four pos- 
terior tibiae with a small spine in the middle of their 
outer edge. 
