proceedings: may ii, 1904. 93 



By Mr. J. D. Dean: Liinnaa auriciilaria,NeritinaJluviatilts — a large number, 

 all taken from one stone, to illustrate the abundance of this species in this particular 

 locality; Ena obsciira, and Hygroiiiia riifescens^ from localities near Lancaster; 

 also sub-fossil Succiuea from a deposit at Hale Moss. 



By Mr. R. Welch: Vitrea Iticida Drap., from Tenby, and Bushy Park, Duljlin 

 — a new Irish locality; Planorbis carinatiis, P. vortex, I.imnaa palustiis, Physa 

 fontinalis, and Valvata piscinalis ho\n^\veY Erne, Co. Cavan, Ireland. 



By Mr. J. W. Jackson : Living sinistral Helix pomatia collected at Box Hill, 

 Surrey, by Mr. F. B. Jennings. 



By Mr. Cosmo Melvill : A fine example of Valuta bednalli Brazier, being the 

 specimen till lately in the collection of Dr. J. C. Cox, of Sydney. It is smaller 

 than the one figured by Mr. G. B. Sowerby in Proc. Alal. Soc, vol. i, pi. 5, but 

 as finely marked. Mr. Sowerby has kindly supplied information about this species. 

 The type is still in the hands of Mr. Bednall, of Adelaide. The large and fine 

 example figured as above is in the collection of Mr. J. J. Macandrew, of Ivy 

 Bridge, Devon, and another somewhat juvenile specimen exists, but its location is 

 unknown. These four constitute all that is at present known about this, one of the 

 most beautiful, isolated, and bizarre of the genus. The locality is Port Darwin, 

 N. E. Australia. The original types of Cyprcea lentiginosa Gray, formerly in the 

 Gaskoin collection, and of C. pyriforviis Gray, were also shewn. 



The very fine series of Cypraa, and Rostellaria delicatula Nevill, from the 

 Townsend collection was shown to illustrate Messrs. Melvill and Standen's papers. 



A large number of locality series of Planoibis can'natiis and P. iimbilicattis were 

 shewn from widely diverse stations in Great Britain and Ireland by Messrs. E. 

 Collier, J. W. Jackson, B. R. Lucas, R. Welch, A. Stelfox, R. Standen, and from 

 the collections of the Society, and Manchester Museum. A long discussion followed 

 in which it appeared that whilst most members had little difficulty in picking out 

 from a large series typical examples of either species, there are large numbers of what 

 seem intermediate forms which are very puzzling even to an experienced collector. 

 The question was raised of hybridity Ijetween the two, a point certainly wortli 

 investigating, and which, if proved, may account for the number of forms showing 

 partial affinities with either species. 



BIBLIOGRAPHY. 



(limited to works received by the society's librarian). 



"Descriptions of twenty-three species of Gastropoda from the Persian Gulr, 

 Gulf of Oman, and Aral)ian Sea, dredged by Mr. F. W. Townsend, of the 

 Indo-European Telegraph Service, in 1903." "On Berthais, a proposed new- 

 genus of marine Gastropoda from the Gulf of Oman." "Note upon Oliva 

 gibbosa Born, and its limits of variation," by J. CosMO Melvill {Proc. Malac 

 Soc, vol.6, pt. I, Mar., 1904, pp. 51-65). 



"Bezeichnung der verschiedenen Richtung von Farbenbandern, Rippen und 

 Furchen bei den Schalen der Mollusken," by E. \on Martens {Sitztmgs-Ber. 

 Gesellsch. naturf. Frennde, Jahrg. , 1900, nr. 6/7). 



"Einige Schnecken der Cocosinsel," by E. von Martens (Sitzungs-Ber. 

 Gesellsch. natiirf. Freuiide, Jahrg., 1902, nr. 3). 



"Die geographische Verbreitung von Pomatias septemspiralis Raz. {maculatus 

 Drap.) " by E. voN Martens (^Sitzuitgs-Ber. Gesellsch. naturf. Freunde, Jahrg., 

 1902, nr. 3), 



