246 



parallel-sided, and impression of pronotum much less con- 

 spicuous. Its antennae, as seen from above, are (except 

 about the base) parallel-sided, but from the side each appears 

 thin from the base to near the apex, when it is strongly 

 triangularly inflated and truncated ; its abdomen is without 

 distinct fascicles (it is the only species I have seen of which 

 this could be said), but the margin of each near the base is 

 rather more densely clothed than the rest of the upper- 

 surface. 



Articerus gibbulus, Sharp. 



With doubts I previously (D identified some Victorian 

 specimens as gibbulus; but since then have seen four speci- 

 mens in the South Australian Museum (including three males) 

 labelled as bostocki, and as from Western Australia, that 

 evidently belong to gibbulus, and are certainly distinct from 

 the Victorian specimens (described on page 251 under the name 

 of cremastogastri). The original description of bostocki is 

 worthless, but the name (probably incorrectly) has been 

 regarded as a synonym of fortnumi ; fortnumi is an abundant 

 species in South Australia, but I have seen no specimens of 

 it from Western Australia. 



Articerus dentiventris, n. sp. 



<S . Dark castaneous-red ; head, prothorax, and base of 

 antennae still darker. Moderately clothed with reddish (in 

 some lights almost golden) pubescence, becoming setae .on 

 tips of elytra ; upper-surface of abdomen almost glabrous, but 

 sides near apex with a few stiff setae, each side of base with 

 two fascicle-like patches of clothing; metasternum con- 

 spicuously clothed along middle. 



Head short, wide, and deep, a longitudinal impression on 

 basal half; punctures dense and comparatively large. 

 Antennae moderately long, cylindrical in section throughout, 

 basal two-thirds rather thin, then suddenly and strongly 

 dilated to the truncated apex. Prothorax moderately trans- 

 verse, front angles rounded off, the hind ones almost rect- 

 angular; with a rather large and deep, subelliptic, medio- 

 basal fovea; punctures much as on head. Elytra rather 

 strongly dilated to apex, subsutural striae distinct; base with 

 punctures as on prothorax, sparser (but quite distinct) else- 

 where. Upper-surface of abdomen with a wide deep excav- 

 ation, with two oblique flat elevations inwards of the fas- 

 cicles, the posterior end encroaching on the middle of the 

 convex portion behind the fascicles; under-surface at base 



(i) Proc. Roy. Soc. Vict., 1904, p. 376. 



