21 



to convexus, insirjnis, and noctis, I am inclined to 

 regard it as probably generically distinct. Unfor- 

 tunately, only the 9 * s known. 



96. Sclerorinus, sp. ( ?) — A single 9 from Menzies 



belonging to the convexus group ; possibly it may 

 prove to be the 9 °f &• insigms. 



97. Sclerorinus elderi, Sloane. — Type <3 , Everard Range, 



Elder Exped. Besides the type the collection con- 

 tains a number of specimens from different localities. 

 The species is variable in regard to size, number, and 

 to a certain extent arrangement of the tubercles. 

 In the type d the median ventral vitta is of a 

 very dark-brown, practically black, colour; in the 

 type 9 (i n mv own collection) the vitta is light- 

 brown. In almost all the specimens I have seen, 

 ranging over a vast extent of country, the <S has the 

 vitta of a light reddish-brown colour. Specimens of 

 this type are in the collection from Ouldea and 

 Fowler's Bay; except that the tubercles are some- 

 what larger, I cannot detect any other difference from 

 the type. Specimens ( S and 9 ) from North-west 

 South Australia (Wells Exped., March, 1903) 

 differ somewhat in being rather depressed above, and 

 in having the tubercles somewhat irregular and of 

 a black colour. I cannot regard them as specifically 

 distinct. Another 9 from Gawler Ranges also shows 

 some slight differences in the tuberculation. The 

 range of the species appears to extend from the 

 western portion of South Australia as far as the 

 Murchison district in Western Australia. 



98. Sclerorinus molossus, Pasc. ( ?) — Three specimens 



which I refer with some doubt to this species. They 

 differ from S. elderi in the smaller prothoracic 

 tubercles and also somewhat in the elytral tubercles. 

 The specimens are from (1) Coolgardie (Blackburn's 

 collection), d ; (2) Yorketown, 9 \ (3) Australia 

 (Blackburn's collection), no locality label, 9 • Pos- 

 sibly they do not all belong to the same species, but 

 I have little doubt that they do so. 



99. Sclerorinus angustijpennis, Sloane. Type <S . A second 



S labelled "Frazer Range." A 9 labelled "Western 

 Australia," Blackburn's collection, appears slightly 

 different, though the differences are possibly sexual. 

 The rostrum is rather stouter, the prothoracic- 

 granules less abraded, and the prothorax not so- 

 dilatate. 



