A Monograpli of the Land & Freshwater MoUusca of the British Fauna. 



This Work is intended to he thoroughly Exhaustive, and will fully illustrate Variation, 

 Structure and Development. _ 



Information specially requested on Testacella and Limax. 



Co-operation is invited from all Conchologists interested in above subject. Any information, or 

 specimens illustrating the Life History— stkucture, development, variation, distribution, 

 ETC.— will be welcomed and carefully acknowledged. .Address;— Care of Mr. J. W. TAYLOR, 

 Office of The Journal of Conchologv, Hunslet New Road, Leeds. 



Now ready, 8vo, doth, price 6j-, post free. 



LIST OF YORKSHIRE LBPIDOPTERA, 



By ^ Geo. T. Porritt, F.L.S. 



This includes copious records of localities for the 1341 species of Macro- and 



Micro-Lepidoptera known to inhabit the County ; together with notes upon their 



local variations, habitats, times of appearance, and other points in their life-history ; 



and forms part of a series of Memoirs upon the Fauna and Flora of Yorkshire, 



which are being prepared under the auspices of the Yorkshire Naturalists' Union. 



To be had from the Secretaries of the Yorkshire Naturalists' Union, 



Wm. Denison Roebuck, Sunny Bank, Leeds. 



Wm. Eagle Clarke, 5, East View, Hyde Park Leeds. 



" THE AMERICAN NATXJEALIST. 



The proprietors have associated with Professors Packard and Cope, its principal 

 editors, a number of leading scientists, whose names are a guarantee of editorial ability, 

 as Dr. C. O. Whitman (Microscopy), Prof. Henry Sewall (Physiology), Prof. C. E. 

 Bessey (Botany). Prof O. T. Mason (Anthropology), Prof C. V. Riley (Entomology), 

 Prof. H. Carvill Lewis (Mineralogy), and Mr. Ellis H. Yarnall (Geographical 

 Exploration). 



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SHELLS FOR SALE. 



VERY FINE COLLECTION of British and Foreign Shells 

 (mostly former) to be SOLD cheap. Upwards of 1,000 perfect speci- 

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 and localized. The whole to immediate purchaser, ;,^ 2 15s., carriage 

 free. — C. Jefferys, Hill House, Laugharne, Carmarthenshire. 



WANTED. — Authenticated specimens of type and varieties of 

 Anodonta cygnea, A. anatina, Unto pictorum, U. tumidus^ 

 Sphcerium corneum, and S. lacustre. Shells, or mounted palates in 

 exchange. — J. D. Butterell, John Street, Beverley. 



WANTED. — Pearls, Pearl-bearing Shells, and Shell Cameos.— 

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 SHELLS, COLEOPTERA, and LEPIDOPTERA. — Students' 

 Collections scientifically determined, at 10/-, 15/-, 20/-, &c. 

 Very useful as presents and for beginners. — T. A. Verkruzen, 

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CR CnU/f PRV ^^' ^^^-^"^ RUSSELL ST., LONDON, 

 ■ D. uU il LIlD T } names and arranges Specimens and Collections 

 of SHELLS, for Public and Private Museums; supplies Desiderata and 

 entire Collections from a large and valuable Stock, which is constantly 

 being replenished by novelties from various parts of the World. 



Price Lists on Application. Specimens sent for Selection. 



