790 REVISION OP THE AMYCTERIDES, iv., 



smaller along vittne. Elytra (13x8 mm.) with the interstices 

 slightly raised, tuberculate; tubercles small, much smaller than 

 in *S. lo7igus or S. vestitus, slightly elongate, subconical pos- 

 teriorly; second with six from about middle down declivity; 

 third with a subcontinuous row of about eleven; fourth with four, 

 spaced-out over middle portion; fifth with humeral tubercle fol- 

 lowed by three small tubercles, and a row of granules barely 

 traceable through the clothing; sixth with a row of fourteen, 

 very small tubercles, rather closely placed, subconical. Sides 

 with interstices granulate. Beneath, convex. Dimensions: 9? 

 20 X 8 mm. 



Hab. — "Stewart's Land, Central Australia." Type in Macleay 

 Museum. — South Australia: Blinman — New South Wales: Dar- 

 ling River (Coll. Lea). 



The last three species are all closely related, so that it is some- 

 what questionable whether they are more than subspecies; I think 

 it well, however, to retain the three names. All the species vary 

 much in size, and also in the number and size of the tubercles, 

 particularly those on the elytra; in some specimens of S. longus, 

 the tubercles are larger than in some specimens of *S'. vestitus, 

 but the reverse is common; and I have seen larger tubercles in 

 ^S'. vestitus than in the other two species. The colour of the 

 clothing is dependable, except in the case of abraded specimens; 

 ^S'. longus has uniform light clothing, *S'. vestitus and S. Stewai^ti are 

 more darkly clothed, and have each elytron trivittate, apart from 

 the colour. 6'. longus may be distinguished by the prothoracic 

 tubercles more widely separated, and also by the fewer and more 

 widely separated tubercles on the sixth, elytral interstice. *S'. 

 Steivm^ti has the elytral tubercles much smaller than in the other 

 two, and has more numerous, and more closely placed tubercles 

 on the sixth interstice. 



S. longus occurs in South Australia, but I am ignorant of its 

 exact habitat. S. vestitus occurs in the Flinders Ranges, South 

 Australia, and in the Mallee-districts of Victoria. There appear 

 to be slight differences between the eastern and western speci- 

 mens, but not definable ones. 8. Stewarti occurs inland in South 



