98 THE NAUTILUS. 



PROCEEDINGS OF THE MALACOLOGICAL SOCIETY OF LONDON, Oct. , 

 1921, Vol. 14, parts 5 and 6. 



Notes on the Distribution of British Land and Freshwater 

 Mollusca from the point of view of Habitat and Climate. By 

 Dr. A. E. Boycott, pp. 163-167, pis. 5 and 6. 



Oecological Notes. By Dr. A. E. Boycott, pp. 167-172. 



Description of a New Phasianella (P. tomlini) from Western 

 Australia. By J. H. Gatliff and C. J. Gabriel, p. 173, figs. 1-3. 



On Helicella, Ferussac. By G. K. Glide and B. B. Wood- 

 ward, pp. 174-190. 



The Anatomy and Relationships of Helix subplicata Sowerby. 

 By Prof. T. D. A. Cockerell, pp. 191-195. 



Helix pisana in Porto Santo. By Prof. T. D. A. Cockerell. 

 pp. 196, 197. 



Molluscan Nomenclatural Problems and Solutions, No. II. 

 By Tom Iredale, pp. 198-208. 



Notes on some Species of Pisidium. By B. B. Woodward, 

 pp. 209-220. 



Notes on pearl formation and Japanese culture pearls. By 

 T. H. Haynes, pp. 221-226, pis. 7 and 8. 



The Mollusca as material for genetic research. By Guy C. 

 Robson, pp. 227-231. 



THE PLIOCENE MOLLUSCA OF GREAT BRITAIN. By F. W. 

 Harmer (Palaeontological Society, Vol. II, pts. 1 and 2, pp. 

 485-705, pis. 45-56, 1920-21), These parts are a continuation 

 of the author's valuable work covering this field. The intro- 

 duction contains a summary of his views as to the relation of 

 the various horizons of the English Crag, to each other and to 

 those of Belgium and Holland. The nomenclature used is 

 largely that of Fischer's Manual, but in the very full synonymy 

 most of the genera now being used are referred to. Under 

 Littorina littorea L. 15 vars. are recognized, six being new, and 

 under L. rudis 12 vars. one new. The author considers L. 

 palliata Say a distinct circumpolar species and not a var. of 

 L. obtusata. The figures are excellent. C. W. J. 



