401 



fold ; epipleurae smooth, and, with, the prosternum and sub- 

 mentum, opaque ; metasternum, legs, and abdomen very nitid 

 and impimctate ; tibiae and femora unarmed, the former 

 moderately enlarged at apex, hind tibiae of male slightly 

 curved. Dimensions — 13-15 x 4'5-5 mm. 



Hab. — New South Wales: Comboyne. 



Twenty-eight specimens collected by Mr. T. G. Sloane 

 and the author in a recent visit to this interesting volcanic 

 plateau, July, 1914. No marked sexual characters are pre- 

 sent, as in the allied species. In form and size like C . mimus, 

 Cart., with elytral sculpture like C. aratus, Pasc, it is easily 

 separated from the former by the sharply-dentate hind angles 

 of prothorax, which in C. mimus is an elongate process ex- 

 tending straightly backwards. C. aratus, Pasc, has a more 

 pronounced cordate prothorax, with wider foliation and un- 

 dentate hind angles. All the species are coated more or less 

 with the adhesive red soil of the district, difficult to remove. 

 This gives a lighter shade than is actually true of the upper 

 surface. Type in author's collection. 



Note. — On the escarpment of the plateau between Wing- 

 ham and Comboyne we captured five specimens of C. distinctus, 

 Bates, thus establishing the first definite record of the habitat 

 •of this species. Hitherto the only specimens seen by the 

 author are (1) the type in the British Museum, labelled "Aus- 

 tralia," and (2) some specimens in the Paris Museum of 

 Natural History identified by him as distinctus. M. Lesne 

 very courteously gave me two of these, which are now before 

 me, one labelled "Tasmanie," the other "Australie." So far 

 no species of Cardiothorax has been found in Tasmania, and 

 this label is evidently a mistake. 



Adelium irregulare, n. sp. 



Elongate-ovate, depressed ; nitid bronze-black, antennae 

 and tarsi piceous red, the latter clothed beneath with tomen- 

 tum of a similar dark colour. 



Head coarsely punctate, more rugosely and sparsely on 

 the forehead, epistoma more closely and regularly ; antennae 

 comparatively slender, extending beyond the base of prothorax, 

 apical joints very little enlarged, joint 3 longer than 4-5 com- 

 bined, 4-10 subconic, successively but slightly enlarged, 11 

 elongate-ovate. Prothorax, 4 fvix.) x 6 mm., base and apex 

 of about equal width, widest behind middle, bisinuate at apex, 

 truncate at base, anterior angles obtuse and lightly produced ; 

 sides widely rounded, more abruptly converging behind to the 

 widely-obtuse posterior angles ; basal and apical border nar- 

 row, lateral border wider without differentiated foliation of 



