REPORT ON THE LAND AND FRESHWATER 

 SHELLS OF YORKSHIRE. 



The Editors of the y. C, having been requested by the Yorkshire Nat- 

 uralists' Utiion to prepare a report on the Land and Freshwater Shells of the 

 couniy, giving a full list of localities for every species and variety, desire to 

 enlist the co-operation of conchologisi s. Not only do they desire to receive full 

 county records and lists, but as they are combining with the local matter a new 

 revision of the British species, embodying results of investigattons since the 

 publication of Dr. Jeffreys' book, they wish to be favoured with the temporary 

 loan of critical and closely allied species and varieties from any part of the 

 world for the sake of comparison. All specimens will be carefully returned 

 free of expense, or if desired, arran(,^ements will be made for their acquisition 

 by purchase or exchange. The first portion of the report is already published 

 in the "Transactions" of the Yorkshire Naturalists' Union and includes 

 the Conchifera. 



Address all Communicaiions to — 



JOH.Y W. TAYLOR, 

 "Journal of Concholo^y " Office, 



St. Ann St., LEEDS. 



FOR SALE-Price £175, 



A very fine and complete COLLECTION OF UNIVALVES, including about 

 3,000 species, of which 1,800 are Marine & 1,200 Land & Freshwater. 



The larger species are usually only represented by one speci- 

 men, and the smaller ones by two or more, in Glass Boxes. 



Outline of the Collkction. 



Murex tenuispina (2), pal ma ?osce, and 37 others. Volufa 

 cymbiola, riitila, pallida, volvacea, fusiformis^ fulgetrum, angulaia^ 

 and 22 others. Afitra, about 100 species. Cyprcea aurora, 

 umlnlicata, sulcidentata, exiista, fessellata, Capensis, and about 120 

 other species. Harpa ii/ipsriiilix (2) and 6 others. Triton, 

 Persona, Ranella, about 80 species. Marginella, 50 species. 

 Terebra, 50 species. Nassa, about 120 species. Coliimbella and 

 Engi7ia, 80 species. Conns, about 100 species. Oliva and 

 Ancillaria, about 60 species. Tiirbinidoi and Trochida, about 

 175 species. 



Land Shells. 



Helix, including Nanina njid Cochlostyla, about 430 species. 

 Bulirnus, BuHjuuIus, and B'lliDiini/s, about 80 species. Chnisilia, 

 90 species. Achatinella and Fartuia, about 120 species. Streptaxis, 

 5 species. Melaniadtz and Sti-epo7naiidce, about no species. 

 Pahtdina, Tajialia,A/npi//liiri(i, &=(:.., about 40 species. Cyclostoma, 

 Helicina, Catajihis, Cyclaphorn- , and other operculated land shells 

 (many genera) about 130 sjjcc ies. 



Apply— British Naturalists' Agency, 



St. Ann Street. LEEDS. 



