Street, E., Mondays, at 8 p.m. Meetings :— May 7th, Exhibition. Field Meetings: 

 April 29th, Chingford (10.13 a.m., Liverpool St.). 



The South London Entomological and Natural History Society, Hibernia 

 Chambers, London Bridge. — The second and fourth Thursdays in each month, at 8 p.m. 

 April 26th, " Mosses," Mr. W J. Lneas; May 10th, Lantern Slide Exhibition; May 24th, 

 Collecting Notes ; May 26th, Field Meeting at Wisley (L.S.W.E.) ; June 14th, Exhibition. 



North London Natural History Society, Hackney Technical Institute, adjoining 

 Hackney Downs Stations, G.E.E., at 7.45 p.m. April 24th; May 8th, "An Entomo- 

 logical Holiday in North Cornwall," by L. Sabine. May 22nd, " The Life and Work of 

 Linne," L. B. Prout. May 12th, Excursion to Toothill, near Ongar. June 2nd-4th, 

 Excursion to Lyndhurst. 



Lancashire and Cheshire Entomological Society. — Koyal Institution, Liverpool. 

 April 16th. Field Meeting, June 16th, to Prestatyn. Hon. Sec, E. J. B. Sopp, 104, 

 Liverpool Road, Birkdale. From whom all necessary information can be obtained. 



Birmingham Entomological Society, Norwich Union Chambers, Congreve Street, 

 at 8 p.m. April 30th, May 31st. 



On TUESDAY, May 1st, 1906, at One o'clock. 



MR. J. C. STEVENS 



Will OFFER for SALE, at his Rooms, 38, King Street, Covent Garden, 



London, W.C, 



THE COLLECTION OF 



BRITISH LEPIDOPTERA 



Formed by the late Rev. E. C. DOBREE FOX, 



comprising fine bred series and numerous rare species. 



The British Noctuae and their Varieties. 



(Complete in 4 volumes. Price 7s. per vol., 28s. per set). 



These four volumes comprise the most complete text-book ever issued on the 

 NocTuiDES. The work contains critical notes on the synonymy, the original type descrip- 

 tions (or descriptions of the original figures) of every British species, the type descriptions 

 of all known varieties of each British species, tabulated diagnoses and short descriptions 

 of the various phases of variation of the more polymorphic species ; all the data known 

 concerning the rare and reputed British species. Complete notes on the lines of develop- 

 ment of the general variation observed in the various famihes and genera. The 

 geographical range of the various species and their varieties, as well as special notes by 

 lepidopterists who have paid particular attention to certain species. 



I^^TEach volume has an extended introduction. That to Vol. I deals with "General 

 variation and its causes"— with a detailed account of the action of natural selection in 

 i producing melanism, albinism, etc. That to Vol. II deals with "The evolution and 

 genetic sequence of insect colours," the most complete review of the subject pubhshed. 

 That to Vol. Ill deals with " Secondary Sexual Characters in Lepidoptera," explaining 

 so far as is known, a consideration of the organs (and their functions) included in the 

 term. That to Vol. IV deals with " The classification of the Noctuse," with a comparison 

 of the Nearctic and Palsearctic Noctuides. 



- The first subscription list comprised some 200 of our leading British lepidopterists, 

 and up to the present time some 550 complete sets of the work have been sold. 

 The treatise is invaluable to all working collectors who want the latest information on this 

 group, and contains large quantities of material collected from foreign magazines and the 

 works of old British authors, arranged in connection with each species, and not to be 

 found in any other published work. 



To be obtained from J. Herbebt Ttjtt, 119, Westeombe Hill, Blackheath, 8.E. 



