580 MR. F. MOORE ON THE LEPIDOPTERA OF THE [June 19, 



the three largest cygnets, and the white down was in course of being 

 moulted, flying off from the birds when they moved briskly ; the 

 white frontal spot was still perceptible. On the 3rd August the 

 smallest and most backward cygnet died, being still in the down 

 with the exception of a slight indication of the tail-feathers ; it was 

 tinged with brownish-grey on the wings and tail, and more slightly 

 on the head, but elsewhere was white throughout. On the 27th 

 September another cygnet died : it had lost its down and was well 

 feathered throughout ; its general colour was white ; but the head 

 and back of the neck were tinged with greyish brown ; the feathers 

 on the wing-coverts and back were also all more or less broadly 

 tipped with a similar tint. The two surviving cygnets subsequently 

 became pure white, but did not lose the greyish brown tint on the 

 crown of the head till May 1877 ; and in fact one of them still (on 

 June 4) retains traces of it. In the other bird it has been replaced 

 by the ferruginous colour so common on the crown of the head of 

 adult Swans, and which I think I have observed to be more con- 

 spicuous, in the ordinary race, in male than in female birds. 



The old pair have again hatched a brood this spring, six in 

 number ; and the cygnets resemble those of last year, being of a })ale 

 greyish ciimamon-brown on the upper parts, but nearly white on the 

 head. Whether the prevalence of this brownish-grey tint in both 

 broods is an indication of one or both the parents not being quite 

 true-bred, is a question which I am not competent to decide, but 

 which may be worthy of consideration. 



6. The Lepidopterous Fauna of the Andaman and Nicobar 

 Islands. By F. Moore^ F.Z.S., Assistant Curator, 

 India Museum, London. 



[Eeceived June 7tb, 1877.] 



(Plates LVIII.-LX.) 



Note. — The materials used for the accomj)anying paper were 

 mostly collected in the S. Andamans by Mr. F. A. De lloepstorff, 

 the Deputy-Superintendent in charge of that Settlement. The 

 specimens were forwarded to this country for disposal ; and I have 

 to thank the several gentlemen into whose hands they ultimately 

 went for their kind permission to describe them. Those from the 

 Nicobars were chiefly collected by Mr. R. Meldola, who accompanied 

 the late Venus-Transit Expedition to those islands, to whom my 

 thanks are also due. 



June h\h, 1877. 



