364 



The tabulated statement of the distinctive characters of 

 the known Platydesmi must now be altered as follows : — 



A. Antennal flabellum piceous-black ... obscuricornis, Blanch. 

 A. A. Antennal flabellum red or testaceous. 

 B. Antennal flabellum has only three 

 laminae. 

 C. Basal 2 joints of hind tarsi scarcely 

 differing in length. 

 D. Pronotum coarsely punctulate sulcipennis, Mad. 

 DD. Pronotum finely punctulate punctulaticeps. 

 CC. Basal joint of hind tarsi notably [iHackb. 



shorter than 2nd joint. 

 D. Prothorax fully twice as wide as 



long major, Blackh. 



DD. Prothorax notably less trans- 

 verse inamoenus, Blackh. 



BB. Antennal flabellum has four laminae inusitatus, Blackh. 



In a paper which I had the honour of reading before 

 the Royal Society (South Australia) last year I continued my 

 revision of the Australian Sericoid Lamellicornes by treating 

 of the group of genera of which Scitala may be regarded as 

 the typical member, and also of several aberrant genera 

 which appear to me to follow that group more naturally than 

 to occupy any other place in the aggregate. They complete 

 that portion of the aggregate which consists of winged species 

 having simple claws. In a former paper (Trans. R.S., S.A., 

 1898, p. 32, etc.) I furnished a tabular statement of the char- 

 acters of the Australian Sericoides, in which I placed at the 

 end of the table seven genera differing from all those pre- 

 ceding them in respect of certain strongly marked charac- 

 ters, inasmuch as they present one or more of the following 

 peculiarities, viz., absence of wings suitable for flight, claws 

 not simple, and prosternal sutures open. The genus dis- 

 tinguished by the lastnamed character (McEchidiu^j I have 

 since regarded as better placed before the other six of those 

 genera than as the last of the seven, and accordingly I 

 placed it in my present revision as the last of the genera dis- 

 cussed in my paper of 1907. There now remain, therefore, 

 only the genera having claws not simple, which are the "other 

 six" referred to above, and also another genus ( Anachtirofus) 

 founded by me subsequently (Tr. R.S., S.A., 1900, p. 39) for 

 a very remarkable' Lamellicnrn taken by Herr Koch in Cen- 

 tral Australia, and Macleay's genus Odontotonycr. The first 

 of these genera fC(d^ahonica) calls for some special remark, 

 since I characterized its claws originally (in 1895) as appendi- 

 culate, but in 1898 placed it among genera with simple claws, 

 accidentally omitting to add a note setting forth the reasons 

 for the change. The fact is its claws are intermediate in 

 form, and should be called, I think, "subappendiculate.'' 



