1S88.) 279 



specimens of Leucania impndens, Hb., taken bj Mr. W. Farrcn, of Cambridge, one 

 closely resembling Hubner's grey type, one the Tar. striata of Staudingcr, one 

 resembling Hubner's figure of pudorhia, the others being intermediate forms. 

 Mr. White, preserved larvte, also imagines of the genus Acronycta, for the purpose 

 of exhibiting the difference of character in the larvae, and the close resemblance of 

 tlie moths, which he stated was so strong in the well-known instance of A. tridens 

 and A. psi ; Mr. Wliite said he should be pleased to receive ova of any species of 

 this genus for the purposes of studying the affinity of the group, it would be 

 interesting to ascertain if the larvffi varied in the different stages, and whether there 

 was a much closer resemblance in the final stage. Mr. South remarked that in the 

 earlier stages the larva of A. psi could not be separated from the larva of A. tridens. 

 Mr. J. Jenner Weir exhibited British and Continental specimens of Euchloe 

 cardamines, L., and remarked that he had observed for some years a difference 

 between the latter, so far as he had been able to examine them, and those captured 

 by himself in Xent, Surrey, Sussex and Hampshire. Those captured in these 

 counties had the orange spot on the upper-wings reaching but slightly beyond the 

 discoidal black spot, the inner edge curving outwards, not extending beyond the 

 first median nervule, thus leaving the hinder angle white; this disposition of marking 

 he found perfectly constant in those captured. In the Continental specimens the 

 orange spot extended considerably beyond the discoidal spot, and was continued to 

 the inner edge of the wing, causing the hinder angle to be orange. The distinction 

 pointed out was very small, but if it was constant, our -E. cardamines was an insular 

 variety easy separable from Continental specimens. Mr. Tutt read a paper, "The 

 Morphology and Physiology of an Insect," which was followed by a discussion. 



April 12th, 1888 : the President in the Chair. 



Mr. Slater exhibited a Bomhyx from Zulu Land, which he said approached 

 nearest to S. oulie, taken by M. Guerin in South Abyssinia, and might be a local 

 variety of that species, if not, it was a new species. Mr. John Lea, varieties of 

 TcBniocampa munda, Esp., light specimens without the twin black spots. Mr. 

 Henderson, forms of Satyrus Semele, L., Cucullia verbasci, L., from various localities, 

 with a view of illustrating the local variation of the species. Mr. E. Adkin, bred 

 specimens of Fygcera anachoreta, Fb., fi'om the neighbourhood of Saltwood Castle. 

 Mr. J. T. Carrington thought that the species was no doubt introduced to this 

 country with the Balsam poplar. Mr. Tugwell, grey and black forms of both sexes 

 of Nyssia hispidaria, Fb., which he stated were all bred from one batch of eggs, 

 there was, however, very little variation in the larvae. Mr. Jenner Weir exliibited 

 specimens of Pieris hrassiccs, L., from St. Petersburg, lat. 60°, Lewes and Blackheath, 

 between lat. 50' and 52°, Hyeres, lat. 43°, and remarked that the species did not 

 differ from places so remote, either in marking or in size. Sir. T. R. Billups, a living 

 specimen of the genus Aspidimorpha, which he said was an apparently new species, 

 and was brought from Upper Burmah amongst the roots of an orchid, Dendrobium 

 brymerianum. 



The Secretary read a note from Mr. T. D. A. Cockercll, with reference to an 

 exhibit of a new rose-gall from Custer, Co. Coloi'ado, which had been pronounced by 

 Mr. L. O. Howard, of the U. S. Department of Agriculture, to be the product of an 

 uudescribed species, Mhodites iuberculator , Riley. — H. W. Baekee, Hon. Sec. 



