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sweet-brier, and Vorticella ; Mr. Macer, Orthezia msignia, 

 and head and eyes of the jumping spider ; Mr. Turner, 

 under side of Argyimis aglaia; Mr. R. Adkin, fresh- water 

 algae in conjugation, Volvox globator with resting spores, 

 section of stem of Virginian creeper, head of Vespa rufa, also 

 Alaptus ininiiniis, one of the smallest hymenoptera in the 

 world ; Mr. Coombs, section of eye of blow-fly ; Mr. West, sun 

 animalcule {Actinospheriimi), and water-flea ; Mr. Medland, 

 diatoms ; and Mr. Tutt, wings of lepidopterous insects. 



MARCH %th, 1888. 

 T. R. BiLLUPS, Esq., F.E.S., President, in the Chair. 



Messrs. H. Robson and H. A. Auld were elected members. 



Mr. R. Adkin exhibited a variety of Eiibolia bipimctaria, 

 Schiff., in which the whole of the ground of the forewings was 

 black; a whitish grey basal patch and central fascia (the 

 latter enclosing the usual central spots, which were very 

 prominent), being the only markings visible ; hindwings 

 correspondingly dark. The specimen, which is a male, was 

 taken by Mr. O. Dannenberg at Boxhill, in July, 1886. Plate 

 I., fig. 9. 



The following notes from Mr. T. D. A. Cockerell were 

 read : — 



Agrotis sttffiisa. This insect is abundant in America, from 

 Georgia and Texas to Hudson's Bay, and is now generally 

 known there as A. ypsilon. It appears that Von Rottemburg 

 described it in 1776 under the m.m.t ypsilon, which is prior to 

 Hiibner's siijfusa, and ought therefore to take its place, and I 

 would suggest that unless any sufficient reason can be given, 

 the prior name should be adopted in England. An additional 

 synonym to those given in the " Entomologist " Synonymic 

 List, is A. telifera, Harris, 1841. 



On the origin of Gonepteryx cleopatra, L. At a meeting held 

 early in 1887, I expressed the opinion that the change of 

 colour from red to yellow seen in certain species of Zygcena, 

 and allied moths, as well as in other classes of animals, was 

 due to the effect of ill-conditions in breaking up or altering 

 some rather highly complex pigment. Mr. South remarked 

 at the time that the case of Gonepteryx cleopatra was probably 

 a case of the formation of that pigment from a simpler one, a 



