REVISION OF THE NYCTOZOILIDES . 
149 
Dimensions : 14 x 8 mm. 
Habitat : Sea Lake, Victoria. 
I am indebted to Mr. J. C. Goudie for several specimens of 
this species, which I was able to compare with Pascoe's types of 
Onosterrhus in the British Museum, from all of which it differs in 
the pronounced anterior angles of the prothorax. In general form 
it is nearest to 0. Icevipennis , Haag-Rut. The type is certainly 
male ; what I take to be a female has the anterior tarsi becoming 
gradually smaller from base to apex, and the anterior angle of 
prothorax even more strongly produced and a little outwardly 
directed. The species in this respect resembles Agasthenes, but 
is otherwise very different. 
A single specimen, mutilated as to antenna? and hind tibiae, 
differs so markedly from the above, though of the same size, 
colour, and facies, lias been sent with the above, and can best 
be described by comparison with 0. acuticollis as follows: — 
ONOSTERRHUS GOXJDIEI n. sp. 
Head wider in front of eyes than the preceding, epistoma 
truncate in front with the sides rounded in a curve continuous with 
that of oanthus, separated from the forehead by a sinuate suture, 
the whole microscopically punctured. Prothorax 4 x 5.5 mm., 
more widely emarginate at apex, anterior angles even more acute 
than in the preceding species, and produced forwards and out- 
wards ; sides more evenly hut less widely rounded, distinctly 
sinuate near both angles, more strongly in front than at base, 
posterior angles acute and a little outwardly directed, margins 
more strongly thickened, lateral gutter wider and more uniform, 
disc quite smooth in middle, with minute punctures only per- 
ceptible at sides. Elytra more nitid, sutural region strongly 
depressed and concave, apical declivity steeper, each elytron with 
four almost, smooth costoe, the space between these with irregularly 
scattered indefinite rows of evident (to the naked eye) punctures, 
these becoming larger towards the sides, with the usual single 
row of large punctures at the extreme sides. Intercoxal process 
truncate with nearly parallel sides, presternum smooth, its process 
wider than in 0. acuticollis, lateral tooth of submentum short and 
triangular, mandibles wider. 
