THE ENTOMOLOGIST'S LIBRARY. 



Books written by J. W. TUTT, F.E.S. 



The British Noctuse and their Varieties. 



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



The four volumes comprise the most complete text-book ever issued on the Noctuides. 

 It contains critical notes on the synonymy, the original type descriptions (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 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, &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 Noctuse," with a comparison of the 

 Nearctic and Palaearctic 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. 

 Tutt's series of papers on ' Melanism and Melanochroism.' " 



British Butterflies. 



(Illustrated. Crown 8vo., Cloth, Gilt. Price 5/-). 



This book consists of 476 pages, contains 10 full-page illustrations, and 45 wood-cuts. 

 There are figures of every British butterfly. Sometimes three or four figures of the same 

 butterfly to illustrate the two sexes, underside and variation are given. The full-page 

 illustrations and most of the wood-cuts have been drawn by the well-known entomological 

 artist, Mr. W. A. Pearce. 



Each British butterfly is described under the following heads : — (1) Synonymy. (2) 

 Imago. (3) Variation, with summarised diagnoses of all described forms, British and Con- 

 tinental. (4) Egg. (5) Larva. (6) Pupa. (7) Time of appearance. (8) Habitat and Distribution. 

 Besides these, there are extended remarks on each of the Tribes, Subfamilies, Families, 

 Divisions and Superfamilies. The descriptions of the " Larvae " and " Pupse " are mostly 

 original. There are 282 aberrations and varieties diagnosed, of which 11 1 are described 

 for the first time. 



At the end of each chapter is a brief summary giving the following information, in 

 tabular form, for each species: — I. Dates for finding (1) the ovum, (2) the larva, (3), the 

 pupa, (4) the imago. II. The Method of Pupation. III. Food-plants. 



The preliminary chapters consist of a series on the structure of the Egg, Larva, 

 Pupa, &c. ; also others on practical work — Collecting, Pinning, Setting, Storing, Label- 

 ling, &c, 



