AD VERTISEMENTS. 



THE COLLECTOR'S MANUAL 



OF 



British Land and Freshwater Shells, 



By LIONEL E. ADAMS, B.A., 



Hon. Treasurer Conchological Society. 



Illustrated by Collotype and Engraved Figures of the species from 

 Original Drawings, 



By A. SICH, G. W. ADAMS, and the ADTHOR. 



Containing a full enumeration and description of all the recognized varieties, with 

 diagnostic tables of the more difficult genera, framed for the purpose of facilitating the 

 easy identification of the more critical species. 



A full and detailed Census of the known Distribution of every species, including the 

 results of the latest researches. 



Price, 8/- Plain and 10/6 Coloured, nett, 



A few copies with Dicplicate Plates (Colotired and Plain) at 15s. 

 per copy, nett 



Post Free, 5d. per Copy Extra. 



LEEDS: TAYLOR BROS., Publishers, Sovereign Street. 



oiPiTSTionsrs oif otiiei leiREss. 



"JOURNAL OF CONCHOLOGY," January, 1897. 



". . . The work now forms a handsome volume, containing 214 pages of text and 

 eleven plates, the frontispiece being a beautifully-executed collotype plate, with enlarged 

 and strikingly-pourtrayed figures of correctly-identified types of the British species of 

 Pisidiut/t. . . . Nine plates are devoted to the presentation of faithfully -coloured 

 figures of all the British species, which can hardly fail to greatly aid the identification of 

 doubtful shells, while Plate XI. contains a series of instructive figures explanatory of the 

 more usual terms employed in connection with the animal and shell. The text may be 

 broadly divided into an introductory part, a descriptive and systematic part, and a con- 

 cluding section, dealing with the comital distribution of the various species. . . . Mr. 

 Adams has also, with considerable ability and success, compiled with great care a series of 

 six elaborate and thoughtfully-arranged synoptical tables, to facilitate comparison, and to 

 shew at a glance the characters which distinguish the closely-allied species composing those 

 perplexing genera, Arion^ Hyalinia^ Vertigo and Pisidium^ and also tabulates the 

 dififerences separating the various generic groups of slugs. In addition, the author has with 

 great judgment collated and to some extent classified the chief variations to which each 

 species is knq^n to be subject. . . . Following the systematic portion of the work is a 

 very copious and accented glossary of the various scientific and technical terms used in the 

 book, and the work is concluded by a comital census of the distribution of the various 

 species, as verified by the referees of the society. . . In conclusion, we have much 



pleasure in recognizing this work as decidedly the best manual upon the subject, and as one 

 which can hardly fail to act as a strong incentive to a more active prosecution of the study 

 -r — i.,„^ ariri frfLRhwater moUusca." 



