280 REVISION OF THE AUSTRALIAN SPECIES OF ADELIUM, 



long, truncate in front and behind, anterior angles slightly pro- 

 duced and obtuse, rather narrower at base than at apex, sides 

 widely rounded with foliaceous margins having a narrow raised 

 shining border and slightly arcuate towards anterior and posterior 

 angles, the latter widely obtuse but defined. Disc and sides 

 coarsely and rather irregularly punctate with a few larger 

 depressions. Central channel shallow but distinct, not extending 

 to apical border. Elytra about two and one-third times as long 

 as the prothorax, and wider than it, shoulders rather squarely 

 rounded, ovate; sides of male little rounded, of female more 

 widely expanded, and sharply contracting to a somewhat pointed 

 apex ; striate-punctate, with ten lines of punctures on each 

 elytron, the last on the side; punctures rather small, close and 

 regular in size and distance; intervals flat or very slightly convex, 

 but towards sides and apex having lines of thin, more or less 

 elongate shining pustules; beneath black, shining and finely 

 punctured; intercoxal process margined and truncate, anterior 

 tibiae very slightly curved, other tibiae straight; anterior tarsi of 

 male with four basal joints widened in the male. Dimensions — 

 (J 10 5 x 4*5 mm.; 9 11 x 5 mm. 



Loc. — Botany Bay and Kogarah, near Sydney. 



This species comes under Sect. ii.C in my classification, and is 

 nearest to A. pustulosum Blackb., from which it differs in (1) 

 smaller size, (2) narrower (in proportion to elytra) and smoother 

 prothorax, (3) prothorax having central canal, (4) finer and more 

 regular punctures in elytral striae, (5) more ovate shape of elytra, 

 and (6) darker colour. I have six specimens before me, as well 

 as a cotype of Mr. Blackburn's A. pustulosum, and the above are 

 only the most easily defined of the many differences that exist 

 between, these two species. A. pustulosum is altogether a more 

 robust and coarsely sculptured insect, while the channelled pro- 

 thorax is a rare character in this genus that readily distinguishes 

 this species. From A. victorice Blackb., it differs in size, colour, 

 canaliculate pronotum, finer sculpture, inter alia. 



