570 STUDIES IN AUSTRALIAN ENTOMOLOGY, NO. XII., 



a reddish mark near margin below anterior elytral spot. Pro- 

 thorax transverse (3-5 x 4-65 mm.), subconvex ; apex narrow 

 (2-1 mm.), lightly emarginate; anterior angles obtusely rounded; 

 sides ampliate in middle, widel}^ rounded at widest part, strongly 

 and roundly narrowed to apex, less strongly narrowed to base 

 (3-25 mm), posterior part widely subsinuate if viewed from side, 

 rather rounded if viewed across disc; a wide shallow depression 

 on each side of base; margins lightly raised from these basal 

 depressions. Elytra wide, oval (9x6 mm.); sides lightly rounded; 

 apex sinuate on each side; interstices 2-7 almost equal in size 

 and convexity, summits nitid and impunctate, 3rd and 5th a 

 little larger than others, 3rd more prominent posteriorly. Length 

 14, breadth 6 mm. 



(J. Smaller; prothorax less transverse (3-25 x 4 mm.), narrower 

 at base (2-8 mm.); posterior part of sides more upturned, more 

 sinuate when viewed from side; elytra similar (7-7 x 5*5 mm.), 

 less rounded on sides, summits of interstices narrower. Length 

 12-5-13, breadth 5-2-5'5 mm. 



Hah. — Q. : Eockhampton (fide Castelnau and Chaudoir), Bur- 

 nett River District (Coll. Sloane). 



I have no hesitation in referring my largest specimen (9) to 

 E. rockhamptonensis, Casteln., and the smaller specimens {^) 

 agree with Chaudoir's note on his E. corjndentus. I therefore 

 regard these two species as the same. The essential diiference 

 from E. coynptus, Laf., is in the shape of the prothorax which is 

 less strongly narrowed to the base, and much less sinuate on the 

 posterior parts of the sides. 



Note. — My specimens (five in number) were brought back by 

 Professor W. Baldwin Spencer from a trip to Gayndah and the 

 Burnett River in 1892. Amongst the specimens obtained by 

 Professor Spencer were two small ones (lengthlO-5-11-5 mm.) wit^ 

 the prothorax almost as in E. austral asice, Chaud., i.e., more 

 convex than in E. rockhainjjto7ip.nsis and more declivous anteriorly; 

 the elytra do not differ noticeably from E. rockhamjytonensis, of 

 which it seems a small form or variety. 



