CONTENTS OF VOL. II 



6. Natural Selection the Cause of Mimetic Resemblance and Common 



Warning Colours, by Edward B. Poulton. (From the ' Linnean 

 Society's Journal — Zoology,' vol. xxvi, 1898, p. 558.) 



7. An Experimental Enquiry into the Struggle for Existence in certain 



Common Insects, Abstract, by Edward B. Poulton and Cora B. 

 Sanders. (From Report of the Meeting of the British Association 

 at Bristol, Section D, 1898, p. 906.) 



8. Observations on Mimicry in South African Insects, by Guy A. K. 



Marshall, Abstract, arranged by Edward B. Poulton. (From Report 

 of the British Association at Bradford, 1900, Section D.) 



9. Observations on Mimicry in Bornean Insects, by R. Shelford, B.A., 



Curator of the Sarawak Museum, Abstract, arranged by Edward B. 

 Poulton. (From Report of the British Association at Bradford, 1900, 

 Section D.) 



10. Guy A. K. Marshall's proof that Precis octavia is the summer form of 



P. sesamtis, Abstract, by Edward B. Poulton. (From ' Proceedings of 

 the Entomological Society of London,' 1898, p. xxiv.) 



11. Abstract of F. Merrifield's paper on 'The Colouring of Pupae of 



P. machaon; &c. (see below. No. 12, for the complete memoir), and 

 discussion thereon. (From ' Proceedings of the Entomological Society 

 of London,' 1898, p. xxx.) 



12. The Colour-relation between the pupae of Papilio machaon, Pieris napi 



and many other species, and the surroundings of the larvae preparing 

 to pupate, &c., by F. Merrifield, F.E.S., and Edward B. Poulton. 

 (From ' Transactions of the Entomological Society of London,' 1899, 

 p. 369.) 



13. Seasonal dimorphism in tropical American Pierine butterflies. Abstract, 



by Frederick A. Dixey. (From ' Proceedings of the Entomological 

 Society of London,' 1898, p. xxxix.) 



14. Recent Experiments in Hybridisation, by Frederick A. Dixey. (From 



' Science Progress,' vol. vii : vol. ii of New Series : No. 7, April, 1898.) 

 14 A. Modification and variation and the limits of Organic Selection, Abstract 

 of paper by Professor Henry F. Osborn, of Columbia University, 

 New York, and of a criticism thereon, by Edward B. Poulton. (From 

 ' Proceedings of the American Association for the Advancement of 

 Science,' 1897, vol. xlvi, p. 239.) 



15. Notes on American and other Tingitidae, with descriptions of two new 



genera and four species, by George Charles Champion, F.Z.S. 

 (From ' Transactions of the Entomological Society of London/ 

 1898, p. 55.) 



