geneva's butterfly week. 223 



is that of H. cacallae, H. centaureae, H. andromedae, H. sibirica, 

 H. alpina, and H. sidae (!). 



Dr. Courvoisier had sent a very interesting and most carefully- 

 worked out theory relative to the systematic variation and aberration 

 of the Lycaenid group, illustrated by a large number of photographs. 

 One hopes that Dr. Courvoisier intends to publish these photographs 

 and the notes relative to them. It is impossible to do more than 

 mention Messrs. Courvoisier's and Eeverdin's work, in the limited space 

 afforded by this magazine. A part of Dr. Keverdin's notes with 

 excellent plates has already appeared in the Bulletin de la Sac. Lep. de 

 Geneve for last June, and the rest will appear in due course in the same 

 Bulletin. 



Monsieur Lacreuze showed a certain number of giant photographs 

 of the genital organs of a few Hesperids, and several greatly enlarged 

 photographs of the insects themselves. 



A long series of Vanessids produced by heat and feeding experi- 

 ments, together with the complete biologies of several Lasiocampids 

 were Dr. Pictet's interesting contribution to the exhibition. Monsieur 

 Mazel had covered 180 square feet of space with species of the genus 

 Fapilio, all different. Monsieur Helle exhibited butterflies from the 

 Celebes, and Monsieur Pastel had sent a collection of moths and 

 butterflies from the Picarde Artesienne, showing a considerable 

 variation in Pierids. Professor Blachier provided the genera 

 Helicomus and Si/ntoiiiis of South America. Among a few 

 moths exhibited by this gentleman we noted three superb Dniri/a 

 antiiiiachiis, and in a couple of drawers containing Lithocolletinae and 

 Nepticididae were a number of interesting species from the Geneva 

 district, including the smallest of moths X microtheriella. Monsieur 

 €ulot showed a number of the beautifully coloured plates, which he is 

 preparing for his own work Noctuelles et Gconietres d'Europe 

 and for M. Oberthiir's Lepidopterologie coniparee, which we consider 

 the finest work of its kind ever produced. Monsieur Culot also 

 •exhibited a collection of Geometrids. 



Monsieur Mongenet's Burnets and Monsieur Guye's Erycinids 

 were very interesting, especially the former's series of Anthrocera 

 carniolica var. jnrassica, a most beautiful insect. Mr. J. W. Harrison 

 sent from England a drawer of Biston hybrids and a certain number 

 of living larvfe. The Bistons exhibited were B. pilzii (Stdf.), B. luniii 

 (Obthr.), B. denhami (Harrison), B. helenae (Hrsn.), B. lani/ii (Hrsn.), 

 -and B. harriaoni (Hrsn.). Mr. P. A. H. Muschamp showed a drawer 

 of melanising butterflies and moths, among which were some 

 practically spotless Apatitra ilia ab. iliades and A. iris ab. iole and a 

 black ab. of A. (Zi/r/.) viciae (jneliloti). A number of little Geneva 

 schoolboys, who have formed a small society of their own, sent a 

 couple of drawers of aberrations that did honour to their activity. 

 Remarkable among these abs. were a very dark specimen of P. 

 mnemimpie, from Berisal, a Dri/aft paphia ab. jiir/ricans and a C. hyale 

 ab. nir/rofasciata. In Monsieur Rehfous' exhibit was a P. apollo ab. 

 novarae from the Saleve, Geneva. 



Very few insects, other than Lepidoptera, found a place in the 

 " Batiment Electoral" kindly lent to the Society by the town 

 authorities. There were a few Phijlla and other examples of mimetism. 

 I must not, however, omit mentioning M. Jullien's fine collection of 



