THE ENTOMOLOGIST. 483 



the law must, of course, be universal — in other Lepidoptera. 

 Mrs. Treat's experiments are not quite satisfactory. A male 

 maybe an under-fed female; but this can scarcely be the 

 exclusive method of producing males. In a batch of — say 

 one hundred — Antiopas feeding on the same elm or willow, 

 and of course all similarly fed, there will, unquestionably, be 

 a considerable number of males. I have, however, a suggestion 

 to make to Mrs. Treat. We have in the Atlantic States a 

 moth, Thyreus Abbotii, the female larva of which is altogether 

 different in colour from that of the male. Now, if Mrs. Treat 

 will take the female larva of this moth, and, by any method 

 whatever, make it produce a male moth, the process by which 

 such a change is brought about will be worth very serious 

 consideration. I have heard of such changes in Hymenoptera. 

 Why not in Lepidoptera? — JV. V.Andrews; New York, 

 Juli/3U 1873. 



Argijnnis Niobe (Linn.) in Kent. — Mr. Parry, of Canter- 

 bury, sent me two specimens of an Argynnis, to name one of 

 them, which he said he had sent alive to my friend Edward 

 Newman. They are females of Argynnis Niobe, — the typical 

 variety, with the spots on the under side silvery. I know 

 nothing of their history beyond the statement of Mr. Parry, — 

 that he took them twenty miles from Canterbury. Being a 

 sub-alpine species on the Continent, and a native of Sweden, 

 its occurrence in this country might be looked for in the 

 northern counties of England and in Scotland rather than in 

 Kent. — Henry DoiibLeday, Epping, August 23, 1873. 



[Mr. Parry sent me a specimen of Argynnis alive, which I 

 set and returned to him, expressing my opinion that it was 

 A. Adippe. My friend Mr. Tugwell happened to be with me 

 the afternoon before I returned the specimen, and after a 

 careful examination entirely concurred in this opinion. In 

 reference to Mr. Doubleday's observation, that Niobe might 

 be looked for in our northern counties rather than in Kent, I 

 may just repeat that the only other British specimen (recorded 

 in the ' Entomologist,' vol. iv. p. 351, and subsequently in 

 * British Butterflies,' p. 30) was taken by Mr. Gerrard in the 

 New Forest, Hampshire. It is now in the collection of the 

 Rev. Windsor Hambrough. — Edward Newman.] 



Variety of Argynnis Adippe and Lycceiia JRgon. — When 

 in the forest in July I captured, in Stubby Copse, a specimen 



