The British Noctuse and their Varieties. 



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



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

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

 tions of the original tigures) 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 

 pi'oducing melanism, albinism, &c. 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 Noctuae," with a comparison 

 of the Neai'ctic and Palsearctic 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. 



Melanism and Melanochroism in British Lepidoptera. 



(Demy 8vo., bound in Cloth. Price 5/-). 



Deals exhaustively with all the views brought forward by scientists to account for the 

 forms of melanism and melanochroism ; contains full data respecting the distribution of 

 melanic forms in Britain, and theories to account for their origin ; the special value of 

 "natural selection," "environment," "heredity," "disease," "temperature," &c., in 

 particular cases. Lord Walsingham, in his Presidential address to the Fellows of the 

 Entomological Society of London, says, " An especially interesting line of enquiry as con- 

 nected with the use and value of colour in insects is that which has been followed up in 

 Mr. Tdtt's series of papers on " Melanism and Melanochroism." 



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 entomological problems discussed from various standpoints 



Woodside, Burnside, Hillside and Marsh. 



Price 2/6. 242 pp. and 103 Woodcuts and full-page Illustrations. 



A series of Entomological Essays based on the insects to be found in various welJ- 

 known entomological localities. Deals with a great many of the more philosophical 

 .subjects now before the entomological public. 



A few Copies of the following Pamphlets. 



Notes on Hybrids of Tephrosia bistortata, Goeze, and T. crepuscularia, Hb. . . 1/- 

 Some Kesults of Recent Experiments in Hybridising Tephrosia bistortata and 



T. crepuscularia . . . . . . . . . . . . . . . . . . 2/- 



The Drinking Habits of Butterflies and Moths 1/& 



The Lasiocampids . . . . . . . . . . . . . . . . . . 2/- 



Some considerations of Natural Genera and incidental references to the Nature 



of Species . . . . . . . . . . . . . . . . . . . . 1/6 



The Scientific Aspect of Entomology (1) . . . . . . . . . . • - 1/- 



The Scientific Aspects of Entomology (2) . . . . . . . . . . . , 1/- 



A gregarious butterfly — Erebia nerine — with notes on the Lepidoptera of the 



Mendelstrasse .. .. .. .. .. .. .. .. .. 1/- 



The Nature of Metamorphosis .. .. .. .. .. .. .. . • 1/- 



Postal Orders to H. E. Page, " Bertrose," Gellatly Road, Hatcham, S.E. 



