New Volume of British Butterflies. 



The completion of Vol. III. of A Natural History of British Butterflies necessitates 

 an appeal to our supporters for Vol. IV., which will be published without loss of time. 



Vol. III., which contains 410 pages and 53 plates, will be put into the binder's hands 

 as early as possible. We hope to have the bound copies ready in a month. Subscribers 

 who want covers for binding should write at once and state clearly whether they want the 

 backs marked "British Lepidopteea, Vol. X." or "British Butterflies, Vol. III." 

 Price of cases, Is. 9d. each. P.O. should be sent with order. Only as many cases as are 

 ordered will be made. 



The next 20 numbers will also contain a large number of illustrations, and, as it will 

 deal with the complications of some more exceedingly well-known species, it will at any 

 rate be of at least as great interest as its predecessors, and will, we hope, show at least 

 how important a thorough study of our British butterflies becomes when carried out in 

 a detailed and systematic manner. 



Without doubt the only real method of obtaining a sound knowledge of the 

 "Variation," "Natural History," and " Distinbution " of a species is to attack it 

 de novo, and then to fit the work of others into the corners to which it is clear it belongs. 

 The way in which errors are copied and re-copied in ordinary books, leaves the average 

 student with limited time no certain basis to work on. In these volumes, he deals with 

 the material first hand, and can depend on the facts, even if he feels inclined to disagree 

 with the conclusions. 



We have already spent a very large sum in trying to give our British lepidopterists 

 a work that is beyond any offered to the workers of other countries. At the same time, 

 the foundation of it is laid so broadly as to provide an outline for work on the groups 

 treated from the widest possible standpoint. We trust that we shall not appeal in vain to 

 any lepidopterists who can support this extensive work, and by issuing each volume in 

 20 parts, published monthly at Is. per part, we bring it within the reach of all. At this 

 price it is less than the cost of the daily "halfpenny" paper, and at the end the 

 subscriber has a book thoroughly reliable for his own work, and always worth in the open 

 market what he has given for it. 



We trust, therefore, that as many entomologists as possible will fill in the following 

 and support the volume. 



Dear Sir, — 



Please enter my name as subscriber to the next 20 parts (Vol. IV.) of A Natural 

 History of British Butter-flies, for which I forward Cheque or Postal Order value 17s. 6d. 



Name 



Address 



Mr. J. HERBERT TUTT, 22, Francemary Road, Ladywell Road, S.E. 



The Migration and Dispersal of Insects. 

 By J. W. TUTT, F.E.S. 



Demy 8vo., 132 pp. Price Five Shillings net. 



This book, the only one published on this interesting subject, is of first importance 

 to all students of the geographieal distribution of animals, and contains the following 

 chapters : — \ 



1. General Considerations. 2. Coccids and Aphides. 3. Orthoptera. 4. Odonata. 

 5. Lepidoptera. 6. Coleoptera. 7. Diptera. 8. Social Insects— Hymenoptera, Ter- 

 mites. 9. Final considerations. 



Only a small number of copies have been printed. It is trusted that all entomologists 

 will, besides supporting the book themselves, recommend it to any libraries in which they 

 are interested or with which they are connected. 



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 tor 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.' " 



J. HERBERT TUTT, 22, Francemary Road, Ladywell Road, Brockley, S.E. 



