BY K. G. BLA1U. 531 



( . brevis Champ., C. aspersus Blaekb. and C. puellus Geb. 

 form another little group of very closely allied forms, much 

 shorter and stouter than those previously considered, with the 

 prosternal process somewhat prominent behind, widened and 

 emarginate or bilobed at the apex. The type of C. brevis has 

 the punctures of the elytral striae plainly separated, while that 

 of C. aspersus has them practically contiguous. C. puellus, if I 

 am right in my identification, has the punctures of the striae 

 almost as in C. brevis, with the intervals more distinctly granu- 

 late. C. aspersus is described from S. Australia, but I have a 

 specimen agreeing well with the type from the Swan River. 

 Again 1 doubt whether these forms can be maintained as good 

 species . 



C. casta! us Geb. Specimens from Fremantle and King 

 George's Sound that 1 identify with this species cannot well be 

 confused with any of the above. They resemble C. brevis in 

 shape but are readily distinguished by the tine elytral eostae with 

 double rows of punctures between them. There are eight of 

 these costae, as stated by Gebien, as well as a partial 9th, in 

 addition to the epipleural margin ; Carter in his comparison of 

 C. tuberculatus with this species gives the number as six. 



Adelodemus Haag (type, asperulus Haag, = Cestrinus squali- 

 dus Mael. ) is placed in Gebien's Catalogue as a synonym of 

 Cestrinus. It presents many points of difference, notably the 

 deeply emarginate elypeus, and the wide explanate margins of 

 the thorax, amply sufficient to warrant its retention as a distinct 

 genus. 



A. excisicollis Carter is unknown to me, but appears to be 

 correctly placed. It is probably by a slip that it is compared 

 with A. squamosus Mael., A. squalidus being intended. 



Apostethus Pasc. (type, terrenus Pasc.) is allied to Adelo- 

 demus from which it differs in having the front of the head short 

 and rounded anteriorly, the thorax convex, uneven, widely- 

 rounded at the sides, without explanate margins; the elytra are 

 more convex, but with similar broad epipleura, the interstices 

 even, each with a single median row of rather widely spaced 

 granules; legs much as in Adelodemus; the prosternal process 

 is of the same character, but much exaggerated in degree, pro- 

 jecting backwards as two large horizontal lobes. 



Mitua Hope (type, bidwelli Hope) placed both in Genimin- 

 ger and; Harold's and in Gebien's Catalogues as a synonym of 



