280 MR. R. SHELFORD ON MIMETIC INSECTS AND _ [Novy. 4, 
large irregular punctures, and marked on each side with a longi- 
tudinal line of rounded white scales, and in the middle with a line 
of small scales; moreover, punctiform scales are sunk in the 
punctures. 
The elytra are slightly broader at the base than the prothorax 
in the middle, the sides are parallel, the apex is normally 
narrowed; they have above three narrow longitudinal coste, the 
interstices between which are punctate and provided with rounded 
scales; the sides are foveate, each fovea shows a setiform scale ; 
moreover, a line of rounded scales is present along the lateral 
margin; the outer angles of the elytra at the apex are simply 
toothed. 
The metasternum and the base of the abdomen are covered 
with rounded scales; the rostrum beneath and the legs are 
scattered with scale-like sete. The 3rd abdominal segment is 
short and contracted in the middle. 
2. Agrees with the male in all respects except the follow- 
ing :—The body is broader; the head short, nearly square ; the 
metarostrum is shorter, as long as the head; the prorostrum 
much more elongate, longer than the metarostrum ; the antennze 
are inserted between the middle of the rostrum and its base ; they 
are comparatively shorter and stouter; the 3rd abdominal 
segment is longer and not contracted, 
Length 17-23 mmm. 
Hab. Kuching (N.W. Borneo). 
Allied to D. furcillatus (Gylh.), but the new species has the 
head shorter and the eyes more prominent; the prorostrum is 
shorter; the joints of the antenne are longer, the three apical 
ones more distinct; the apex of the elytra are broader and shghtly 
toothed ; the body is shorter and stouter. The female of the new 
species is, moreover, distinguished by the metarostrum which is 
shorter, and by the antennz which are inserted before the middle 
of the rostrum. 
T have named this species in honour of Mr. R. Shelford, who has 
kindly presented an interesting collection of Bornean Brenthids 
to the Oxford University Museum. 
Drurus stLvANus Senna. (Plate XX. fig. 4, 2.) 
The female of this species being hitherto undescribed, I give a 
short description of it :— 
The head is nearly square, with a fovea between the eyes ; 
the metarostrum is short, hardly so long as the head, channelled 
above, and slightly narrowed before the antennz ; the prorostrum 
is slender, glossy, finely punctured, as long as the head and 
metarostrum taken together, The antenne, which are conse- 
quently more approximate to the base than to the apex of the 
rostrum, are rather stout, with the 3rd joint longer than the 4th, 
the 6th and 7th subequal, the 8th a little shorter, the three 
apical joints well distinct and separate. The prothorax is strongly 
contracted anteriorly, the sides towards the middle are almost 
[52] 
