BY H. J. CARTER. 249 



hind border. On each side of this, about the middle of each lobe, 

 is a strongly marked interrupted line, sometimes only indicated 

 by long shallow fovea?. The disc is faintly, the hind part of 

 margin more strongly, rugose; the former generally longitudinal, 

 the latter transverse. Scutellum very large, oval, channelled or 

 impressed in the middle; on the same level as elytra; sometimes 

 with small, wide triangular depression behind this region. Elytra 

 roughly and unevenly crenulate-striate, with eight striae on 

 elytra, and three equally or more strongly marked stria? on the 

 sides and epiplura?, these last strongly punctate, the punctures 

 large and widely separated. The 1st, 3rd, and 5th interstices 

 form rounded ridges crenulated on the sides, the 2nd, 4th and 

 6th smaller. Humeral angles strongly reflexed by epipleural 

 fold and widely rounded, increasing in width rather suddenly 

 behind the shoulders, then gradually widening to near the apex, 

 where they are rather abruptly narrowed and broadly curved at 

 the apex. The surface of elytra is unevenly convex, with a 

 distinct depression about midway between the sulci and the 

 sides, so that the sides, viewed from behind, appear raised. 

 Front and intermediate tibia? slightly curved, hind tibia? straight; 

 all the tibia? somewhat serrated on their inner edge; femora 

 unarmed in both sexes. Dimensions — £ 16 x 5*5 mm.; Q 16"5 x 

 65 mm. 



Hab.— Terrigal and Wyong, N.S.W. (Mr. Cox). 



Mr. Cox, who discovered this species, has kindly given me 

 three specimens (one £, two Q). It is strongly differentiated 

 from all the other opaque species known to me by the sculpture 

 of the elytra, in which it is nearest to C. aratus Pasc, from 

 which it differs widely in the shape of its ptothorax inter alia. 



The sexual differences I note are the following : — 



£. Narrower form, humeral angles of elytra more prominent, 

 narrower and more reflexed, femora stouter, hind tibia? thinner. 



£. More robust, elytra natter (with the uneven surface, as 

 above described, less marked), shoulders of elytra more rounded 

 and less reflexed. Hind angles of prothorax more produced 

 outwards and acute. 



