BIBLIOGRAPHY. 125 



By Mr. C. Oldham : Paludestrina yVw/Jm^?',' beautifully clean and very large 

 specimens, Valvaia piscinalis var. aiitiqua, Great Budworth Mere, Cheshire, Helici- 

 gona a7-histonun, Marianglas, Anglesea, LiinncEa stagnalis var. fragilis, and 

 Succinea piitris, both from Llyn Coron, Anglesea. 



By Mr. P. H. Grierson : Vitrina pellucida var. depresshiscula, Collon, County 

 Louth; Planorbis nantileiis and var. crista, many examples having two-thirds of 

 the last whorl disunited, also P. parvus, including one scalariform example, Ennis- 

 kerry. County Wicklow. 



BIBLIOGRAPHY. 



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



"Monograph of the Land and Freshwater Mollusca of the British Isles," 



by John W. Taylor (part lo, pp. 105-160, pi. 7, 13, 14, 16, 17. [This instal- 

 ment completes the account of Agriolhnax agrestis, and treats of ^. lavis, A. 

 liEvis campestris, Milax gagates, and AI. sowerhii\ 



" On the Mollusca procured during the 'Porcupine' Expeditions, 1869-70, 

 Supplemental Notes, part i," by E. R. Sykes (Proc. Malac. Soc, vol 6, part i, 

 March, 1904, pp. 23-40, pi. 3. [List of species belonging to genera not treated 

 by Jeffreys ; Rettisa fnarshalli, Cylichna obscura, nn. spp. figured]. 



" Descriptions of Twenty-three Species of Gastropoda from the Persian 

 Gulf, Gulf of Oman, and Arabian Sea, dredged by Mr. Y. W. Townsend, of 

 the Indo-European Telegraph Service, in 1903," by J. Cosmo Melvill [Proc. 

 Malac. Soc, vol. 6, part i, March, 1904, pp. 51-60, pi. 5). 



" Berthai's gen. nov." [for Scala intertexta Melvill and Standen, and Onobia 

 egregia A. Ad.] ; " Note upon Oliva gibbosa Born, and its Limits of Varia- 

 tion," by J. Cosmo Melvill {Proc Malac. Soc, vol. 6, part i, pp. 61-65). 



"Sur la synonymic de la petite Pintadine de la Mediterranee," by A. Giard 

 [Melagruia occa Reeve, 1857] {Coviptes j-etidns Soc. Biol., Feb., 1904, vol. 56, 

 P- 255)- 



"L'origine parasitaire des perles d'apres les recherches de M. G. Surat," "Sur la 

 production volontaire des perles fines ou margarose artificielle," by A. GiARD 

 {Coinptes rendiis Soc. Biol., Octobre, 1903, vol. 55, pp. 1,222-27). 



" L'epithelium secreteur des perles," by Alfred Giard {Coinptes re nd^cs Soc. 

 Biol., Dec, 1903, vol. 55, p. 1618). [Comparison of recent statements as to 

 mode of secretion]. 



"Handbook to the Natural History of Cambridgeshire," by J. E. Marr and 

 A. E. Shipley. [Mollusca, pp. 1 14-138, treated by H. H. Brindley, with 

 Notes and a Table of the Local Varieties of Litnncea f>eregra']. 



" Some remarks on the genera Damayanti Issel, Collittgea Simr., and Issele7itia 

 Cllge," by Walter E. Collinge {Proc. Malac. Soc, vol. 6, part I, pp. 9-12, 

 March, 1904). [Reply to criticisms of Godwin- Austen]. 



" L'influenza dei mezzi come causa di variazioni e di dispersione nei mol- 

 luschi," by Dr. Raffello Bellini {Boll. Soc. Nat. Napoli, vol. 18, 21 pp., 

 1904). [Classification of causes and statement of general laws regulating their 

 action]. 



"On a small collection of Marine Shells from Surprise Island," by E. R. 

 Sykes {fourn. Malac, vol. 10, part 4, pp. 137-138, 1903. [List of 52 spp., 

 with brief notes]. 



