• -•"- - ' ANNUAL REPORT. " 28r' 



Aporrhais pespelicaiii, from Soulhport, showing growth stages from embryo to 

 adult ; also from Palermo and Corsica, showing extraordinary development of 

 spines ; and a fine set of A. scrresianiis, from Valentia, Spain, exhibiting much 

 variation in number of spines. 



By Mr. J. Wilfrid Jackson : {a), A large series of Capt. T. Brown's " type speci- 

 mens" from the " Pendleside group" of the Hebden Bridge area, including 

 '^ GoiitatUes' s>/iiilii, G. splendidus^ G. mididalus, G. iiiteintcdiiis, G. Jiigcstis, 

 G. kenyoni, G. parvus, G. iitinutissinins, G. paradoxiciis, G. prolens, G. subsitl- 

 catiis, Orthoceias aciciilaie, 0. brown i, and '■'■ Beleiniiit^s" gibsoni, several of 

 which are synonyms of well-known forms, [b], Pleiircinaittiltts pulcJur, from the 

 Lower Coal Measures of Stalybridge (horizon : over first coal), {c), Glyphioceras 

 off. reticnlalo, from the Lower Coal Measures of Bacup (horizon : Upper Foot 

 Mine). 



ANNUAL REPORT. 



:At the last Annual Meeting the membership of the Society, including the ten 

 Honorary Members, stood at 338. .Since that time six members have resigned, 

 and the deaths of four others have been notified, whilst eleven new members have 

 been elected, so that the membership now stands at 339 — a gain of one on the pre- 

 vious highest record. The deaths, deeply lamented by the Society, are those of 

 ]\Iessrs. Dixon, Rhodes, Storey, and the Rev. A. E. Northey. 



Eight ordinary meetings have been held, and a joint meeting with the members 

 of the Leeds Conchological Branch was held in Manchester, and took the place of 

 the February meeting. The special features of the joint meeting were the exhibi- 

 tion of an exceedingly extensive series of the British UiiionidiF, and addresses by 

 Dr. Tatlersall, director of the Manchester Museum, and Miss M. C. March, ALSc. 

 Dr. Tatteisall's address embodied some interesting evolutionary conclusions, at 

 which he has arrived from original research into the life-history of Littorina 

 litorea, publication of which is promised shortly. Miss March gave the results of 

 an extensive study of \^ariation, as exemplified in the British Unionidie. An abstract 

 of her address has appeared in the Journal of Conchology. 



At six of the meetings there have been special exhibits of the following genera : — 

 Porphyrobaphe, British Unionidit, Amphidromus, OdoiUoslomus, Neritina, and 

 Gibbtis. 



Northern members have also taken part in two rambles — one to Ingleton, the 

 other to Ilkley. 



The Journal op Conchology has been issued quarterly. In the April number 

 the concluding portions of the seventh part of a series of valuable articles on 

 "Additions to British Conchology" (Marine), by Mr. J. T. Marshall, were commenced. 



Some forty-four Papers and Notes have been read before the .Society, and passed 

 for publication, subject to the Editor's discretion. Amongst these is a paper 

 on New S^eciQS o{ Latirus, by Dr. J. C. Melvill, ALA., D.Sc, which brings his 

 mbnograpR-^n the genus down to the present time. The first portion was published 

 in the Memoirs and Proceedings of the Manchester Literary and Philosophical 

 Society, 1891. 



The Council has under consideration the publication of a new Census of the- 

 British Land and Freshwater Mollusca, and the more careful definition of the. 

 boundaries of the vice-county areas. In view of this, members are requested to 

 furnish the Recorder with any fresh records they may make as speedily as pos- 

 sible. During the year the Recorder's work has been comparatively light, few 



