Gentleman travelling .in these Islands will be glad to make 

 collections of insects for such as desire. 



For Terms applij 



A. A. JACKSON, 



5, Thistle Street, Edinburgh. 



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 5 

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

 chapters : — 



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

 5. Lepidoptera. (5. 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 libi'aries 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 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," d'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. 



Entomological Pamphlets, etc., 



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



Correlation of the results arrived at in recent Papers 



on the Classification of Lepidoptera. Price Is. 6d. 



Reviewing the oval, larval, pupal, and imaginal characters used by 



various Lepidopterists. 

 Notes on the Zygaenidae. Price Is. 6d. An account of the habits, etc., 



of several species of the Alpine Burnet moths. 

 Some considerations of Natural Genera and incidental 



reference to the nature of Species. Price Is. net. 



A detailed consideration of the nature of genera and species. 

 Some considerations of the Nature and Origin of Species. 



Price Is. 6d. net. A detailed consideration of the causes that have led to 



specific forms and their isolation. 

 Some results of recent Experiments in hybridising 



Tephrosia bistortata and T. crepuscularia. Price 6d. 



net. Full account of experiments conducted by Dr. Riding and Mr. Bacot 



in hybridising these allied species. 

 The Drinking Habits of Butterflies and Moths. Price Is. 



An interesting essay on the habit as observed in many parts of the world 



and its possible meanings. 

 The Nature of Metamorphosis. Price Is. An essay on the 



nature of the various forms and degrees of metamorphosis in different 



orders of insects. 

 The Scientific Aspects of Entomology. Parts I. and II. Is. each 



part, net. Critical review of the various scientific uses to which the work of 



entomologists may be put. 



Postal Orders to A. H., 41, Wisteria Road, Lewisham, S.E. 



