618 MR. H. J. ELWES ON BUTTERFLIES FROM [DeC. 6, 



It does not appear to me to be sufficiently distinct to be de- 

 scribed from a single specimen, and the band is not appreciably 

 broader than in G. biggsii (gopara), as Doherty says it is. Judging 

 from the figure, it is also very close to Miletus melanion, Feld., 

 from Luzon. 



Gerydus croton. 



Gerydus croton, Doh. J. A. S. B. Iviii. pt. ii. p. 439, t. xxiii. 9 ; 

 Butt. Ind. iii. p. 25. 



Four males and two females from Thandaung in East Pegu at 

 4000 feet elevation. The type was from the Tenasserim valley. 

 The plate does not agree with the underside of my specimens 

 (named by Doherty), which are of a more rusty colour and have 

 broken markings on the hind wing. It seems, however, a very 

 distinct species. 



Gerydus irroratus, Druce, var. assamensis. 



Gerydus irroratus, var. assamensis, Doh. J. A. S. B. Ix. pt. ii. 

 no. 1, p. 37, t. 1.7 6 . 



The type of this is from the Dhansiri valley in Assam, and a 

 female from Perak is marked by Doherty with a ?. 



This species seems identical with one of which I have several 

 pairs from Pulo Laut, and differs from all the preceding in having 

 a pale sexual patch in the cell of the fore wing of the male as in 

 Far a gerydus horsfieldi. 



Gerydus boisdxjvali. 



Miletus hoisduvali, Moore, Cat. E. I. C. p. 19, t. 1 a. fig. 1 $ 

 (1857). 



Gerydus boisduvali. Butt. Ind. iii. p. 24. 



Specimens from Margharita agree with those from Sikkim and 

 from the Shan Hills. 



I have one pair from Sikkim which differ considerably in the 

 colour and pattern of the underside, having a dark transverse band 

 on the hind wing below, and also in having the tuft of bristles at 

 the base of the anal claspers in the male black instead of grey. 



If these differences should prove to be constant, it seems to me 

 that it could be separated specifically ; but the group is a very 

 difficult one and the anatomy requires more study than I am now 

 able to give it. 



Paragerydus horsfieldi. 



Miletus horsfieldi, Moore, Cat. E. I. C. p. 19, t. 1 a. fig. 2 c?(1857). 



Paragerydus horsfieldi, Butt. Ind. iii. p. 26 ; Doh. J. A. S. B. 

 1889, pt. ii. p. 437. 



Specimens from East Pegu, Momeit, and Perak agree with 

 others from Sumatra and Pulo Laut. I have another form from 

 Perak which is smaller and differs in the colour of the underside, 



