ADVERTISEMENTS. 



CONTENTS. 



Is Moisture the cause ot Melanism ?— John E. Robson, F.E.S. . . 

 The Pterophorina of Britain— J. W. Tutt, F.E.S. 

 Naturalists of the Day — Rev. W. F. Johnson, M.A., F.E.S. .. . 

 Lithocolletes Cerasicolla — H. H. Corbett 



Sugaring : A proposal for united observation— John E. Robson, F.E.S. 

 Notes — Coliasedusa, Breeding Bombyx rubi, Variation of Erebia blandina, The 



Aculeate-Hymenoptera of Britain, The Food of Young Spiders, The Ivory Gull. . 

 Notes on the Variation of some North American Mollusca — T. D. A. Cockerell, F.Z.S 

 Addition to the Fresh- Water Mollusca of the British Islands, Slug Plague in Jamaica 

 Notes - ., > .. .. : ; , . . . . .• .. 



Reports of Societies.. .. .. .. .. 



Epeira Quadrata — Rev. F. O. P. Cambridge . . . . 



Vegetable Galls and Gall Insects — S. L. Mosley, F.E.S. 



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