FOR SALE, A SUPERIOR 



Mahogany Entomological Cabinet 



Of 40 Interchangeable Draw^ers. 



Size 18in. by 16in., ebony knobs, sunk panelled sides to carcase, moulded top and plinth, 

 and enclosed by two plate-glass panelled doors. Own make. 



Price £40. T. GURNEY, 50, Broadway, London Fields, N.E. 



The British Noctuae and their Varieties. 



(Complete in 4 volumes. Price 7/- per vol.). 

 (The price is bein§ raised by the publishers to 301- per set.) 



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

 The work contains critical notes on the synonymy, the original type descriptions (or descrip- 

 tions 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 development of the 

 general variation observed in the various families 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. 



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 Noctuas," with a comparison 

 of the Nearctic and Paleearctic Noctuides. 



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

 and up to the present time some 500 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. 



Monograph of the Pterophorina. 



{Two copies only for sale.) 



(Demy 8vo., 161 pp., bound in Cloth. Price 10/-). 



This book contains an introductory chapter on " Collecting," " Killing " and 

 " Setting " the Pterophorina, a table giving details of each species — Times of appearance 

 of larva, of pupa and of imago, food-plants, mode of pupation, and a complete account (so 

 far as is known) of every British species, under the headings of " Synonymy," " Imago," 

 " Variation," " Ovum," " Larva," " Food-plants," "Pupa," "Habitat," and " Distribu- 

 tion." It is much the most complete and trustworthy account of this interesting group of 

 Lepidoptera that has ever been published. 



Rambles in Alpine Valleys. 



Bound in Cloth, with Map and Photographs of District. 



This book contains a series of essays dealing with the colours of insects, and sugges- 

 tions as to the relation in past time between the Alpine and British fauna. Many new 

 facts are brought forward, and eirtomological problems discussed from various standpoints. 



To be obtained from H. E. Page, " Bertrose," Gellatly Eoad, Hatcham. 



