SOCIETIES. 170 



extends to the middle line and forwards towards the base of the 

 abdomen, so that a considerable space in the anterior and upper part 

 of the abdomen is occupied by the chamber. At the anterior external 

 part of this depression or chamber there is a second vesicle-like 

 chamber, formed by a delicate membrane. He considered this struc- 

 ture to be some kind of sense organ, and thought it must be of great 

 importance to the creature, as it occupies a large area of the abdominal 

 region. It is independent of sex, and apparently occurs in all the 

 members of the families Uraniida) and Epiplemidai.. M. Obertliiir had 

 kindly supplied him liberally with dried specimens for the examina- 

 tion of this organ, but fresh individuals, or some well preserved in 

 spirit, are necessary before any of the finer details of the structure can 

 be ascertained. — L. Doncasteb, Hon. Sec. 



The City of London Entomological and Natural History Society 

 held a successful exhibition on April 27th, at the London Institution, 

 Finsbury Circus. Besides the members of the Society, many leading 

 entomologists kindly contributed exhibits. Mr. J. A. Clark sent full 

 representation of all our known British butterflies, amongst which 

 were a long series of male and female Chrysophanus dispar, hermapliro- 

 dite specimens of Dnjas impkia, Plebeiiis ffijon, and PoJijommatns icarus, 

 and black vars. of Limenitis sihijlla. Aberrations in Mr, C. Nicholson's 

 Vanessids included Pymmeis atalanta with partial bleaching of red 

 band on right wing, P. canlui with an additional white spot on fore 

 wings, and Aglaia iirtic(B approaching var. ichnnsa. Mr. A. W. Dennis, 

 a xanthic Epmephele ianira, Pararr/e a/eria female with male colora- 

 tion, Pijrameis canlui much suffused with black, Ari/ynnis adippe with 

 median black band on all wings, Cupido minima under sides with spots 

 obsolete, SpHosoma lubncipeda with central fascia on all wings, H. mm- 

 thastri with spots much enlarged. Mr. Bobt. Adkin, well-known 

 British species of "Clear-wings," series of Endromis versicolor, iMsio- 

 campa quercifuUa and L. ilicifolia, ttc. ; Campkxjramma hilincata, black 

 forms from Kerry, banded from Shetland ; banded Thera jnniperata 

 from Orkney ; black Amplddasijs hctidaria from Yorkshire ; vars. of 

 lioarmia repandata and Abraxas cjrossulariata. Mr. J. W. Tutt's 

 Zygffinids included Zyr/a:na hippocrejndis , a species usually confounded 

 with Z.filipenduliB. Amongst his Geometers were a series of aberra- 

 tions of Cidaria immanata from Lochgoilhead, and a hybrid between 

 Amphidasys strataria and A. beiidaria. Mr. V/. M. Christy, Zyycena 

 Jilipenduhr, and Z. tri/olii, with vars. ; Macroylossa boinbylij'ormis with 

 scales all over the wings, only found prior to flight of imago ; and 

 Nyssia lapjwnaria with N. zonaria and continental relatives for com- 

 parison. Mr. C. G. Barrett, British and European Psychids, with 

 their curious larva-cases ; long and variable series of Ayrotis cursoria 

 and A. tritiri ; Leucaniidae, with Leucania favicolor, n. sp., lately 

 described by himself, and vars. of female spotted, the latter belonging 

 to Mr. G. F. Mathew ; and a moth from Unst, Shetland, agreeing 

 with Hadena maillardi (St. Cat.), placed on the table as a form of 

 Crymodes exidis, but if of specific rank would be an addition to the 

 British list. Typical C. e.ndis and one intermediate form belonging to 

 Mr. Percy M. 13right were also exhibited. Mr. F. J. Hanbury, 

 Noctuas, Noctiia /estiva var. conflua being largely represented, and the 



