THE MAP COMMITTEE " of the Yorkshire Naturalists' 

 Untiox would be glad to hear from any one who would be willing 

 to assist them in transferring the contour-lines of 300, 600, 900, and 

 1800 feet from the six-inch-to-the-mile Ordnance Sheets, to a Map of 

 Yorkshire on the scale of four miles to the inch, which will be supplied 

 by the Committee, and from whom also the use of the six-inch sheets 

 may be obtained. Address to either Secretaries of the Union, 



George Brook, ter., Fernbrook, Huddersfield. 

 Wm. DenisojS Roebuck, Sunny Bank, Leeds. 



H. W. M ARSDEN, 



Being in regular communication with the best Collectors in NOETHERX AND 

 EASTERN EUROPE, can always supply fine Specimens of 



EUROPEAN & BRITISH BIRDS' EGGS AND BIRD-SKINS. 



Including many veiy rare Species. Price Lists on application. 



SPECIAL I-YOUNG BIRDS IN THE DOWN, FROM LAPLAND, &c., 

 ARE NOW ON OFFER. 



Also preserved Larvse of Lepidoptera ; European and Exotic Lepidoptera, Coleop- 

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REGENT STREET, GLOUCESTER. 



On the First of every Month, Frice Sixpence. 



THE ENTOMOLOaiST: 



An Illustrated Journal of British Entomology, 



For diffusing information with regard to the Science generally, and especially 

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Edited ly JOHN T. CARRINGTON, with the assistance of 



Frederick Boxd, F.L.S. Frederick Smith (late Pres. Ent. Soc.) 



Edward A. Fitch. J. Jen^^'er "Weir, F.L.S. 



JoHX A. Power, M.D. F. BucHA^'.i>r White, M.D., F.L.S. 



The "Entomologist " contains numerous well-executed "Woodcuts. Lists of 

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The August ISTo. contains a Coloured Plate of fine varieties of Lepidoptera 

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Subscription for the year 1878, including Fostage and all Double Nos., 

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The Entomologist's Monthly Magazine. 



Price 6d. monthly, 24 pages 8vo, with occasional Illustrations. 



Conducted by J. W. Douglas. R JVIacLachla^-, F.R.S.^ E. C. Rye, 

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This Magazine, commenced in 1864, contains standard Articles and Notes on 

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London : JOHN VAN VOORST, 1, Paternoster Row. 

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