and set in English style acceptable. Will make liberal returns in any family of Norfc 

 American Lepidoptera named or other orders unnamed. — W. D. Kearfott, 114, Liberty 

 Street, Neio York City, U.S.A. 



Exchange. — I am desirous of obtaining butterflies from the Malayan Archipelago, and 

 the Pacific Islands. For such I oiier perfect diurnals from North and South America, 

 North American Coleoptera. — Levi W. Mengel, Boys' High School, Reading, Pa., U.S.A. 



Wanted. — Erycinidse of the world. Offer for same Diurni from United States. — 

 Levi W. Mengel, Boys' High School, Beading, Pa., U.S.A. 



Wanted. — Parasites from British Coleoptera. Beetles infested with Gordius. Any 

 material will be gratefully acknowledged. — H. St. J. K. Donisthorpe, 58, Kensington 

 Mansions, S.W. 



Pakasitical Diptera wanted. — Will lepidopterists who may breed any dipterous 

 parasites from larvse or pupae kindly forward such as they do not require to me ? If so I 

 shall be greatly obliged. — C. J. Wainivright, 2, Handsworth Wood Road, Handsivorth, Staff^s. 



MEETINGS OF SOCIETIES. 



Entomological Society of London. — 11, Chandos Street, Cavendish Square, W., 

 : 8 p.m. March 21st ; April 4th : May 2nd, June 6th. 



The City of London Entomological and Natural History Society. — London 

 Institution, Finsbury Circus, E.G. — The first and third Tuesdays in the month, at 7.30 

 p.m., except in July and August. March 20th, Discussion concerning Triaena tridens 

 &ndi T. psi, opened by Dr. T. A. Chapman. April 3rd, Contribution to the study of 

 the Microlepidopterous Fauna of the London district, A. Sich, F.E.S. 



Toynbee Hall Natural History Society. — Held at Toynbee Hall, Commercial 

 Street, E., Mondays, at 8 p.m. Meetings :— April 2nd (paper by Mr. R. Paulson); 

 May 7th, Exhibition. Field Meetings: March 25th, Coulsdon (10.25 a.m., Cannon St. 

 S.E.R.). 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. 



North London Natural History Society, Hackney Technical Institute, adjoining 

 Hackney Downs Stations, G.E.E., at 7.45 p.m. March 27th, " Neo-Lamarckism," 

 also Special Exhibition of winter and early spring Moths. April 10th, " A Summer in 

 the High Alps," by S. Austin. May 8th, "An Entomological Holiday in North Corn- 

 wall," by L. Sabine. Walking tour, April 13th-16th, Slough to Berkhamsted. 



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

 March 19th ; 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. 



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 families arid 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. 



Each 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 

 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 published. 

 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 Noctuge," 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 

 %yorks 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. Heebekt Tutt, 119, Westcombe Hill, Blackheath, S.E. 



