THE ENTOMOLOGIST'S LIBRARY. 



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



The British Noctuae and their Varieties 



(Complete in 4 Vols. Price 7/- per Volume). 



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

 Noctuides. It contains critical notes on the synonymy, the original type de- 

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

 type descriptions of all known varieties and aberrations of each species, tabulated 

 diagnoses and short descriptions of the various phases of variation of the more 

 polymorphic species, all the data known concerning the occurrence of the rare 

 and reputed British species. There are also complete notes on the lines of develop- 

 ment 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. III. deals with " Secondary Sexual 

 Characters in Lepidoptera," containing, 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 lepi- 

 dopterists. The work is invaluable to all working collectors who want the latest 

 information on this group. It 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 



(Bound in Cloth. Price 2/6). 

 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," etc., 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 connected 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 ; 

 woodcuts. 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 Continental. (4) Egg. (5) Larva. (6) Pupa. (7) Time of ap- 

 pearance. (8) Habitat and Distribution. Besides these there are extended remarks 

 on each of the Tribes, Subfamilies, Families, Divisions and Superfamilies. The 

 descriptions of the " Larvoa " and " Pupae " are mostly original. There are 282: 

 aberrations and varieties diagnosed, of which 111 are described for the first time. 



At the end of each chapter is a brief summary giving the following informa- 

 tion, 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 of short essays on the structure, 

 etc., of the Egg, Larva, Pupa, etc., also others on practical work— Collecting, 

 Pinning, Setting, Storing, Labelling, etc. 



