704 REVISION OF THE AMYCTERIDES, iv., 



Type 9. — More robust than (J, the prothorax (5 x 6-5 mm.) 

 with tubercles rather larger and more conspicuous; elytra (12x8 

 mm.) with apex more produced, mucronifurm, tubercles more 

 separate on third interstice, tubercular index 5, 10, 0, 17, 15; 

 beneath, convex, fifth segment feebly impressed longitudinally, 

 and with a small, irregular, transverse fovea at apex. Dimen- 

 sions : (J 18-0 X 7 ; 9 20 x 8 mm. 



Hab. — S. Australia. Types in Macleay Museum. 

 The above description has been drawn up from the types, but 

 many of the details of structure are liable to great variation; 

 indeed it is hard to find two specimens agreeing in all particulars. 

 I believe that Macleay was led into making too many species by 

 not taking this variability sufficiently into account. I have ex- 

 amined the types of the other species T would refer to S. vittatus, 

 and have noted same points of divergence from the types of this 

 species. 



S. riigicollis, type 9- — Agrees in general appearance and 

 structure with type 9 of ^' vittatus, but has the tubercles on the 

 elytra rather more prominent, especially on the fifth and sixth 

 interstices; tubercle-index 2, 8, 0, 17-14, 12. Dimensions : P., 

 5 x 6-5; E., 11 X 8-5; 20 x 8-5 mm. 



^S'. Angasi Macl. — Two female specimens, evidently of one 

 species, under the name-label in the Macleay Museum. Of the 

 same form as ;S'. vittatus, but with the tubercles rather less pro- 

 minent and fewer in number, variable in shape and number in 

 the two specimens. 



Very close to ;S'. co7hspersus, and possible females of that form, 

 if it can be considered distinct from S. vittatus. Tubercle-index, 

 A, 2, 8, 0, 13, 10; B, 4, 8, 0, 14, 10. 



S. conspersus Mac!., type ^. — As there is some difference in 

 general facies between the species and the type ^ of S. vittatus, 

 I have thought it wiser to give a fuller description of the type- 

 specimen. 



(J. Smaller than S. vittatus, type (J, elongate-ovate, not sub- 

 parallel on sides Clothing similar, the vitt?e well marked, also 

 the interrupted maculte on the third interstice. Head and 

 rostrum as in S. vittatus. Prothorax (4-5 x 5-5 mm.) widest 



