570 STUDIES IN AUSTRALIAN ENTOMOLOGY, NO. IX., 



HOMALOSOMA CRA3SIF0RME, H.Sp. 



Compact, heavy, robust ; head large ; prothorax very little 

 narrowed to base, apex and base of equal width (8 '3 mm.); elytra 

 truncate-oval, subparallel on sides. Head, under surface, legs 

 and antennje black; prothorax nitid, black on disc, viridescent 

 towards margin; elytra greenish-black, shagreened, summits of 

 costae nitid, lateral margin brassy-green. 



Head large, convex, a little swollen behind and below eyes; 

 front lightly, widely and shortly biimpressed; eyes small, convex. 

 Prothorax subquadrate (7.5* x 10-5 mm.), widest about anterior 

 fifth, lightly narrowed postex'ioi'ly; sides not sinuate towards base; 

 apex widely, deeply and evenly emarginate; angles advanced, 

 roundly obtuse; base emarginate in middle, angles obtuse, hardly 

 mai'ked ; lateral margins widely upturned near base ; lateral 

 channel wide; median line lightly impressed; lateral basal impi-es- 

 sions wide, well marked; space between basal impressions widely 

 depressed along base; posterior marginal puncture placed just within 

 the basal angle. Elytra wider than prothorax (18-5 x 12-5 mm.), 

 hardly narrowed to base, convex, lightly declivous to sides, 

 strongly but not abruptly declivous to apex; base wide; humeral 

 angles rounded ; basal border raised in a short subdentiform 

 prominence at humeral angles; apex not sinuate on each side; 

 strife wide, shallow— a row of shallow separate punctures at 

 bottom of each; striole at base of first interstice short, oblique; 

 interstices 1-7 costate, subequal, ninth nitid, hardly distinct from 

 margin, narrow and raised posteriorly, seriate-punctate; marginal 

 channel wide; third interstice with about four punctures along 

 its course. Prosternum longitudinally impressed and setigero- 

 punctate between coxfe; mesosternum and metasternum glabrous. 

 Ventral segments laevigate, third, fourth and fifth setigero-punctate 

 in middle near posterior margin. Posterior coxje contiguous. 

 Length 35, breadth 12-5 mm. 



Hah. : Queensland — Cairns (Coll. French). 



* This is the length of the prothorax in the middle; from anterior to 

 posterior angle it is 9 mm. 



