REVISION OF THE NYCTOZOILIDES. 147 
The following are the species proposed as new : — * 
ONQSTERRHUS PARVUS u. sp. 
Elongate-ovate, convex, black srub-opaque above, nitid black 
beneath, legs piceous, antennae and tarsi red. Bead glabrous! 
and impunctate, labrum emarginate, epistoma. rounded in front 
with scarcely perceptible break of curve at the canthus, edges 
slightly raised, limiting suture only indicated by . depression, eyes 
small and widely separated, antenna? short thin, third joint shorter 
than the two succeeding, apical four nearly round, of a lighter 
colour, thirteenth conical. Prothorax rather flat, 2.5 x 4 mm. 
(length measured in middle, width at base), very minutely punc- 
tate, slightly wider at base than at apex, the latter areuate- 
emarginate, not margined, anterior angles feebly produced and 
bluntly rectangular, extreme border (viewed sideways) wide, 
(viewed from above) narrowly rellexed and channelled within, 
sides irregularly rounded with a feeble anterior and stronger pos- 
terior sinus, the thickened border feebly produced posteriorly down- 
wards and outwards in a short tooth, posterior angle within this 
border sub-rectangular, without- any indication of a. central line 
or basal fovea?. Scutellum very transverse and narrow. Elytra 
elongate-ovate, very convex, slightly wider than prothorax at base, 
greatest width behind middle, sides with a scarcely perceptible 
margin, only evident from above near the shoulders, apical 
declivity steep, disc strongly and irregularly punctate with 
here and there some indications of lineate arrangement {e.g., 
on each side of the suture a line of rather elongate punctures), with 
two more or less hevigate intervals, besides the suture, equally 
distant on each elytron, punctures on apex smaller but evident, 
lateral row of larger punctures traceable from base to apex. 
Men turn trapezoidal, submentum with lateral tooth widened into a 
lobate process, transversely strigose and punctate, sternum and 
femora finely punctate, abdomen and epipleura? strongly striate 
and finely punctate, two apical segments of abdomen punctate 
only, all coxa? finely punctate, tibia? more coarsely punctate than 
femora, otherwise smooth, (J with slight tomentose line near base 
of tibia?. 
Dimensions: 10x5 mm. 
Habitat : Kookynie, West Australia. 
