206 



margin somewhat sinuate l)etweei:i tlie lateral borders ; base 

 truncate, not bordered ; anterior angles ))roadly and shortly 

 advanced, obtuse, their inner margin very oblique ; basal angles 

 rectangular ; lateral border entire* thick, narrow in 

 middle, widening in front to anterior angles, tliicker 

 and more prominent behind, not sinuate before the base ; 

 median line rather strongly impressed, not reaching anterior 

 margin, losing itself in the rugulose part behind. Elytra 

 smooth, broadly oval (18-5 x 11 mm.), suljparallel on 

 sides, shortly rounded to peduncle, broadly rounded behind, 

 convex, declivous behind, hardly at all declivous to jiedunole 

 behind scutelluni ; suture deeply impressed on disc ; border 

 narrow, slightly wider behind : a row of une(jually and rather 

 widely-placed punctures at a little distance from tiie margin. 

 Prosternum transversely and irregularly striolate in front of the 

 coxee, strongly declivous to anterior margin, not excavate between 

 the coxse, truncate behind. Inflexed part of pronotum project- 

 ing sharply beyond the episterna. Venti-al segments covered 

 with fine irregular scratches ; apex rugulose. Femora broad, 

 flattened, irregularly transversely striolate, longitudinally ex- 

 cavate below for whole length ; posterior ones strongly dilatate on 

 lower side behind the middle: anterior tibiie wide at apex, ending 

 externally in a dentiform projection, outer edge thin with one or 

 two very minute projections ; four posterior tibiae dilatate at apex, 

 their outer edge concave : posterior trochanters transversely 

 striolate, oval, narrowed to apex and obtuse : posterior tarsi of 

 moderate length ; joints 1—4 successively shorter, first not as 

 long as two succeeding ones together, last short, convex, liardly 

 narrower at base. 



Length, 29; breadth, 11 mm. 



Habitat. — Murchison District, West Australia. 



This is the largest species of the genus, its affinity is to 

 P. Hfnvitti, Casteln., from which its greater size and broader form 

 help to distinguish it. I have only seen the specimen described 

 above, and have been unable to compare it with P. Howitti. 



The description above may be supplemented liy i-eference to 

 the following points, the value of which, though I have found 

 them worthy of notice in separating the species of Parroa and 

 Adotela, I have not been able to satisfactorily determine from 

 want of a sufficient number of specimens to examine. The sinus 

 of the mentum is bordered, thus causing the Ijottom of tlie 

 emargination to assume a lightly Insinuate form, the middle being 



*The lateral border of the prothorax being sometimes (as hi Adotela 

 Frenchi, SI.) obsolete before reaching the base, I have, for the sake of 

 brevity, thought it convenient to call it entire when it reaches uninterrup- 

 tedly along the sides from the anterior to the ))asal margin. 



