BY A. M. LEA. 741 



A hazelnut-hedge at Sprent was practically destroyed by larvae 

 of this species, and the specimens described were reared from 

 sections of the attected trees. 



UrACANTHUS VENTRALIS, n.sp. 



(J. Reddish-castaneous. Rather densely clothed with whitish 

 pubescence; four hind femora along middle of undersurface with 

 dense subochreous clothing; three basal segments of abdomen 

 each with a conspicuous round medio-apical spot, on which the 

 clothing is somewhat darker and longer than on the adjacent 

 parts. 



Head with median line deep and narrow; clypeus with dense 

 irregular punctures, suture partially concealed. Antenna:^ dis- 

 tinctly passing elytra, third joint lightly, fourth to tenth trian- 

 gularly produced on one side at apex, eleventh about one-fourth 

 longer than tenth. Frothorax much longer than wide, base not 

 much wider than apex, sides strongly and almost evenly rounded 

 in middle, strongly transversely corrugated, but across middle 

 irregular. Elytra distinctly wider than prothorax, tips evenly 

 rounded but suture strongly spinose ; each with two feebly 

 elevated lines and renniants of two others; basal third with 

 dense and coarse punctures, rapidly becoming smaller to middle, 

 and dense and small posteriorly. Length, 17 mm. 



Hab. — Western Australia: Mullewa (Miss J. F. May). 



In general appearance, fairly close to U. striijusus and U. 

 albatufi, and with somewhat similar abdominal clothing to the 

 males of those species, but each elytron unispinose instead of 

 bispinose, prothorax with more uniform clothing, the lateral node 

 more obtuse and more distant from the base, antenna? consider- 

 ably longer, etc. It is allied to U. snturalis, but is paler, pro- 

 thorax with sides more evenly rounded, each with four lines of 

 pale clothing, with the interspaces sparsely clothed (on U. 

 (iiUuralis the lines of clothing are more lunnerous, and the inter- 

 spaces are glabrous), but in particular by the curious abdominal 

 clothing. 



