148 ANNALS OF THE QUEENSLAND MUSEUM 
Five specimens are under examination, collected by Mr. Edgar 
Duboulay, of Kookynie, of which I can only determine one as a 
male. There is little variation in size. The species differs from 
the other elongate-ovate species in its small size and distinctly 
punctate elytra-, the nearest- allied species — 0. J avis, Pasc. — 
having impunctate elytra. 
ONOSTERRHUS ACUTICOLLIS n. sp. 
Ovate, subnitid, glabrous, black (sometimes with a brownish 
tinge, antenna? piceous red, tarsi clothed with light-brown tomen- 
tum. Head — Labrum prominent, showing membranous hinge, epis- 
toma truncate in front, not at all reflexed, sides oblique, meeting 
canthus at a wide angle, raised and rounded in front of eyes, 
limiting suture straight and not strongly impressed, minutely 
punctured ; punctures more evident on epistoma than on forehead, 
antenna? not extending to base of prothorax, third joint as long as^ 
fourth and fifth combined, 3-7 sub-cylindric, eighth transverse 
and cup-shaped, ninth and tenth nearly round, eleventh largest and 
oval. Prothorax 3x6 (vix) mm. (length measured in middle, 
width near base), wider at base than at apex, width across anterior 
angles 3.7 mm., apex strongly emarginate, anterior angles produced 
in front of eyes and sharply acute, sides gradually diverging to 
beyond the middle, then sub-angulately converging and sinuate 
before the slightly produced acute posterior angles, base and 
apex with a thin but regular raised border, sides with a strongly 
raised thickened marginal fold, forming an ample gutter within, 
disc very slightly convex and almost microscopically punctured. 
Scutellum very widely transverse and short. Elytra wider than 
prothorax and three times as long, humeri obsolete, sides widening 
in an oval to beyond the middle, rather abruptly contracted near 
apex, the apex itself lobate, border narrowly raised and shining, 
very slightly channelled within ; disc very convex, depressed at 
suture behind scutellum, quite impunctate and smooth except for 
lateral row of punctures continuous almost to apex, apical declivity 
subvertical ; epipleurse smooth, abdomen finely striolate, posterior- 
intercoxal process widely rounded ; presternum transversely strio- 
late, its process produced into a blunt tooth, tooth of submentum 
conical and short, anterior tarsi with first joint longer and wider 
than the rest, tibiae slender, posterior tibia? without tomentose line.-. 
