247 



BIBLIOGRAPHY: 



Papers and records published with respect to the Natural History and 

 Physical Features of the North of England. 



MOLLUSCA, 1886 and 1887. 



The present instalment, containing 183 titles of papers, is for the 

 two years 1886 and 1887, and covers a period of much greater con- 

 chological activity than the preceding two years, for which the Biblio- 

 graphy was published at pages 144-149 of this journal for May 1886. 

 Several of the papers are of high interest, notably the very complete 

 county-lists for Lancashire and Lincolnshire, two areas hitherto much 

 neglected conchologically, and several lists for smaller areas, mostly 

 in Yorkshire. 



The Marine Shells — although they are the subject of five times 

 as many papers as in the previous biennial period — still account for 

 but an infinitesimal part of the attention which has been paid to 

 Conchology in our North Country, as only twenty-one of the titles 

 contain any reference to them, and not one of these is of any par- 

 ticular importance. The twenty-one titles are those by Anon, [not 

 signed], T. D. A. Cockerell (three titles), W. Shewell Corder, R. D. 

 Darbishire, B. S. Dodd, W. Gain, Carleton Greene, W. H. Heathcote, 

 W. A. Herdman (two), W. C. Hey (three), H. Wallis Kew (four), 

 J. T. Marshall, and P. L. Simmonds. 



Since former Bibliographies were published, the opinion of the 

 Editors as to the desirabiHty of including titles of papers printed 

 in The Naturalist has changed, and they now think that each Biblio- 

 graphy ought to be a full and complete record of titles for the period 

 of time which it includes. Accordingly, the present instalment 

 embraces not only the complete record for the two years 1886 and 

 1887, but also the titles of papers published in this journal for 1884 

 and 1885, and designedly omitted at the time from the Bibliography 

 published for those years. This new departure having been taken, 

 the present and former instalments, taken together, present a full and 

 complete record of the conchological literature of the eleven northern 

 counties (or eighteen vice-counties) for the four years they embrace. 



Conchological work being based, like botanical, on the recognition 

 of the equalised comital areas defined in 'Watson's Cybele Britannica,' 

 it will not be out of place here to enumerate those with which this 

 journal concerns itself : — Isle of Man, Cumberland, Westmorland 

 with Furness, Lancashire West, Lancashire South, Cheshire, Derby- 

 shire, Nottinghamshire, Lincolnshire South, Lincolnshire North, 



Aug. 1888. 



