372 Prof. Westwood on 
tubercle in the middle, close to the fore-margin ; the 
anterior lateral angles are slightly produced in front, and 
rounded, and the sides are slightly emarginate at about 
one third of their length from the front angles; the pos- 
terior angles are obtuse, the junction of the lateral and 
hind-margin being indicated by a minute angular projec- 
tion; the disc of the prothorax is nearly smooth and 
impunctate, with a central, rather strong longitudinal 
sulcus, which is deeply punctured ; the prothorax is nar- 
rower than in D. obtusatus, with the sides much less 
strongly punctured than in D. subtuberculatus; the 
elytra are more elongate and narrrower than in the spe- 
cimens usually named L. cancroides and obtusatus, and 
much less strongly setose at the sides, they are also not 
so strongly or so thickly punctured as in the allied species. 
The anterior tibiz are armed with ten teeth on the outer 
edge, those nearest the femora being very much dimin- 
ished in size. 
The description of this species given by me in the 
Entomological Magazine (vol. V. p. 267), was taken 
from the original individual, at that time im the posses- 
sion of the Linnean Society ; but in the coarse wood-cut 
several minute details were omitted, such as the frontal 
tubercle of the prothorax (which appears in my original 
drawing), the peculiar form of the canthus of the eyes, 
and posterior angles of the prothorax, &c. 
M. Boisduval has given a description, in the voyage 
of the “ Astrolabe” (p. 234), of an insect said to be from 
New Guinea, in the collection of M. Dupont, under the 
name of JL. caneroides, which “ différe un peu de Vindi- 
vidu figuré par Olivier.” He describes the prothorax as 
marked with two impressed fovez, and the elytra as 
pubescent, covered with punctures “ avec quelques cétés 
tres peu marquées. It is probably distinct from Olivier’s 
insect. 
In the British Museum a female belonging to this 
genus, from Melbourne, is labelled as the female of L. 
cancroides, but I believe that identification is simply 
conjectural ; the head is strongly punctured, the angle 
of the canthus in front of the eyes strongly defined, the 
crown gradually sloping to the anterior margin, the pro- 
thorax destitute of a frontal tubercle, the surface punc- 
tured all over, but more delicately on each side of the 
