from India and Ceylon. 51 



toma by Thomson and Lacordaire, has been restored and 

 recharacterized by Van Lansberge (Notes Leyden Mus. 

 vol. vi.). 



Cerambycidae. 



Ploccederus obesus, n. sp. 



Ilammnticherus obesus, Dup. Dej. Cat. p. 347. 

 Cerambyx obesus, Cat. Gerum. and Harold, p. 2802. 



I do not find that this species has yet been described. It 

 is wrongly placed in the Munich Catalogue, and should be 

 put in the genus Ploccederus. Closely allied to P. ferrugineus, 

 Linn., it differs by the following characters : — 



With a pale castaneous derm, closely covered by a short 

 fulvous-grey pubescence, which more or less hides the colour 

 beneath ; with the joints of the antennas narrowly tipped with 

 black at their apices, and with a narrow line along the suture 

 and the extreme margins of the elytra also black. 



The specimens in the Museum collection are from N. India 

 (Darjeeling and Siwalik Hills), Siam, and the Andaman 

 Islands. 



Ploccederus ferrugineus, Linn. 



Cerambyx ferrugineus, Linn. Syst. Nat. 12th edit. p. G2G ; Oliv. Ent. 



iv. no. 67, p. U, pi. xviii. fig. 134, a and b ; Fabr. Ent. Syst. i. pt. ii. 



p. 25G. 

 Cerambyx gigas, Fabr. Mant. Insect, i. p. 132. 



This Linnean species, whose name seems to have been 

 altogether omitted from the Munich Catalogue, has for a 

 synonym P. nittdus, White (Hamma ticker us). The following 

 manuscript note by Mr. White occurs in a copy of his ' Ca- 

 talogue of B. M. Longicornia ' : — " Hammaticherus ferru- 

 gineus, Linn., Oliv. . . . Near nitidus, larger, but may be 

 the same." I have no doubt, having consulted Olivier's 

 figure and description, that the two names refer to the same 

 species. 



Ploccederus versutus, Pasc. {Cerambyx), the type of which 

 is in the British Museum collection, is very closely allied to, 

 and is probably only a small variety of, P. ferrugineus. 



The specimens of ferrugineus in the Museum collection are 

 nearly all ticketed " Ceylon," two are ticketed vaguely tl Ind. 

 orient.," while one is ticketed (doubtless by mistake) " China." 



A variety of P. ferrugineus, differing only in the colour of 

 the elytra, which is almost black, occurs in N. India (Bengal). 



4* 



