205 



rather conspicuously) produced backward over the second seg- 

 ment, in all the specimens I have seen. 



Near Adelaide ; also taken by Mr. J. G. O. Tepper on Kanga- 

 roo Island. 



R. suhfusca, sp. nov. Oblongo-ovalis ; minus parallelus ; sat 

 nitidus ; pubescens ; rufo-fuscus ; prothorace elytrisque- 

 nigricantibus ; capite prothoraceque fortius, elytris magis- 

 etiam fortiter, crebre punctulatis. Long., 2| 1, ; lat., 1^ 1. 



The whole under surface is of a somewhat fuscous red colour— 

 the antennae palpi and legs red rather than fuscous — the upper 

 surface (except the head and anterior angles of prothorax which 

 are reddish) is very dark fuscous. The pubescence is uniform. 

 The antenna are as in R. austrcdis. The prothorax is not more- 

 than a third again as wide as it is long down the middle. In 

 other respects the prothorax resembles that of R. austrcdis ex- 

 cept that it is more evenly narrowed from the base to the apex. 

 The whole undersurface is strongly punctured, the puncturation 

 being very coarse and not close on the prosternum and thence 

 gradually finer and closer hindward till on the apical ventral- 

 segment it is very fine and very close. The abdominal plates are 

 hardly three-fourths the leng-th of the basal segment and are- 

 punctured rather more coarsely and sparsely than the adjacent 

 surface. The mesosternum resembles that of R. austrcdis except 

 that it is very gently and roundly emarginate in front. The 

 prosternum is nearly parallel sided between the coxa?, but hardly 

 distinctly carinate on its margins ; in front of the cox^e it is- 

 strongly compressed with the angular prominence in the middle 

 of its anterior margin very strong. The greatest width across- 

 the elytra is half again the greatest width of the ]3i'othorax, 

 though the true base of the former is hardly wider than the base 

 of the latter. The hindward curve of the hind outline of the 

 basal ventral segToent is scarcely apparent. The eyes are very 

 coarsely granulated but scarcely so oblique as in R. ccustrcdis. 



Adelaide. 



N.B. — Although this species differs strongly from the preced- 

 ing, in many respects its structural differences appear to be only 

 in degree. The prosternum makes a distinct approach towards 

 that of Cryjotolcemus from which its appendiculate claws, coarsely 

 facetted eyes, ttc, distinguish it. It is quite possible that it may 

 eventually have to be distinguished generically from R. australis. 



R. xanthura, Muls. Specimens in my own and other collec- 

 tions, taken near Mount Gambler, on Kangaroo Island, and 

 other places, evidently pertain to this species. The following 

 particulars are not mentioned in M. Mulsant's description : — 

 Puncturation of the upper surface very close and rather fine,, 



