( *v ) 



they all seem, as in this case, to have been chance captures, 

 its habits being unknown. 



Mr. A. Harrison exhibited a series of Avnphidasys betularia 

 bred from parents taken in the New Forest in 1900, including 

 twenty males and thirty-nine females, and six gynandro- 

 morphous specimens, out of seven bred, one being a cripple. 

 The larvae when first hatched were kept indoors, but were 

 afterwards steered on birch when a few days old. Mr. Tutt 

 said it was very remarkable that so many gynandromorphous 

 specimens should have been secured from a single brood. 

 There appeared to be a modification in the sexual organs 

 corresponding with external variation of the secondary sexual 

 characters. Mr. Merrifield remarked that the proportion of 

 gynandromorphous forms in hybrid specimens was always much 

 larger. 



Mr. C. J. Gahan exhibited a male specimen of Thamnotrizon 

 cinereus, L., one of the long-horned grasshoppers taken by 

 Mr. F. W. Terry at Morden, near Wimbledon. He called 

 attention to a very interesting abnormality displayed by the 

 specimen in possessing two pairs of auditory organs instead of 

 a single pair, the second pair being situated on the tibiae of the 

 middle legs in a position corresponding with that of the normal 

 pair on the fore legs. 



Mr. F. Merrifield exhibited a series of Orgyia antiqua bred 

 from pupae placed in a refrigerator five weeks and then 

 exposed to a mean temperature of 48° Fahr. Specimens thus 

 treated were much darker than types of those occurring in a 

 natural state, some approaching in depth of colouring to 0. 

 gonostigma. He also exhibited for comparison specimens from 

 Sutherlandshire lent by Mr. C. G. Barrett, none of them 

 however comparable in darkness to those obtained by his 

 experiment : and others from the collections of Mr. A. Bacot 

 (including four of the American species) and Mr. L. B. Prout. 

 Mr. Tutt said that the limits of variation of our own form 

 were little known, and the most northern examples, though 

 the largest, were decidedly not the darkest. 



Papers. 



Mr. R. South communicated a paper entitled " Lepidoptera- 

 heterocera from China, Japan, and Corea, by the late Mr. 



