760 REVISION OF THE AMYCTERlDES, iv., 



Many of the species approach each other closely and are 

 difficult to separate. At the same time, I think that, with the 

 exception of >S'. areuosus, which is a synonym of *S'. sabulosus, and 

 possibly of S. Gondiei, which, perhaps, is only entitled to be 

 regarded as a variety of S. sabulosus, all the described species are 

 distinct. Tt is possible that I may have allowed too much for 

 variation in the cases of S. molestus and >S'. Elderly both of which 

 have distinct "forms." 



The elytral sculpture of *S'. convexus and its allies is at variance 

 with that of the other species of the group. The striae are more 

 or less strongly foveate, and the interstices subcostiform and 

 bi'okeii up into nodulose elevations, having little of the tuber- 

 culate character of the other species, excepting about the de- 

 clivity. 



Table of Sjxicies, Group ii. 



Subgroup A. Elytral tubercles rounded or conical. 



1(20). Anterior femora with median ridge beneath. 



2(15). Fifth interstice closely tuberculate throughout, tubercles small. 



3(8). Tubercles black. 



4(5). Sides of prothorax with granules obsolete below protuberance 



of disc S. sabulosus Macl. 



5(4). Sides of prothorax granulate to coxse. 



6(7). Elytral tubercles very small, granuliform S. Dixoni Ferg. 



7(6). Elytral tubercles noticeably larger and more conical. ..6'. Goudiei Ferg. 

 8(3). Tubercles reddish. 



9(10). Clothing dense, ferruginous S. molestus Fuse. 



10(9). Clothing less dense. 



11(12). Tubercles of second interstice not noticeably larger than 



those of third interstice. 



12(11). Tubercles of second interstice closely placed S. occidentalis SI. 



13(14). Tubercles of second interstice fewer and more distantl}' 



placed S. angustipennis SI. 



14(13). Tubercles of second interstice distinctly larger than those of 



third interstice S. Broioni, n.sp. 



15(2). Fifth interstice with strong, but separate, tubercles. 



16(17). Tubercles black S. laticolli-s Maid.; S. molossus Fasc. 



17(16). Tubercles reddish. 



18(19). Prothoracic granules large S. Elder i 8\. 



19(18). Prothoracic granules smaller, form narrower S. angustior, n.sp. 



20(1). Anterior femora not ridged beneath S. amy cieroides Ferg. 



