THE ''MAP COMMITTEE" of the Yorkshire Naturaxists' 

 Union 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 ^ either Secretaries of the Union, 



Oeorg^^rook, ter., Fernbrook, Huddersfield. 

 Wm. De^ison E-Oebuck, Sunny Bank, Leeds. 



H. W. MARSDEN, 



Being in regxdar communication with the best Collectors in NORTHERN AND 

 EASTERN EUROPE, can always supply fine Specimens of 



EUROPEAN & BRITISH BIRDS' EGGS AND BIRD-SKINS, 



Including many very rare Species. Price Lists on application. 



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

 ARE NOW ON OFFER. 



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

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REGENT STREET, CL.OUCESTER. 



On the First of every Month, Price Sixpence. 



THE ENTOMOLOaiST: 



An Illustrated Journal of British Entomology, 



For diffusing information wiih. regard to the Science generally, and especially 

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 Raee Species, and for FiguPvING Varieties. 



Edited ly JOEN T. CARRINGTON, with the assistance of 



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



Edward A. Fitch. J. Jexxer AVeir, F.L.S. 



JoHX A. Power, M.D. F. BucHA>-Ay ^Vhite,. M.D., F.L.S. 



The ' •' Extomologist " contains numerous well-executed Woodcuts. Lists of 

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The August No. contains a Coloured Plate of fine varieties of Lepidoptera 

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Suhscription for the year 1878, including Pofitage and all Double Nos., 

 SIX SHILLINGS. 



The Entomologist's Monthly Magazine. 



Price Gd. monthly, 24 pages 8vo, with occasional Illustrations. 



Conducted by J. W. Douglas, E. MacLachlan, F.R.S., E. C. Rye, 

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This Magazine, commenced in 1864, contains tta idard Articles and Notes on 

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Subscription 6s. per volixme, post free. The volumes commence with the June 

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London : JOHN VAN YOOEST, 1, Paternoster Eow. 

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