GASTROPODA (pECTJKIBEANCHIA) . 
Moll 59 
Dythinella sp. n./R. M. Johnston, P. R. Soc. Tasm. 1878 [1879], 
p. 25, Barren Island. 
Bythinella. Bythinia unicarinata (Woods) = Paludcstrina legrandiana 
(Brazier), Bythinia tasmanica (Woods) = Paludestrina ivisemaniana 
(Brazier), and Bythinia ponicillensis (Woods) = Amnicola simoniana 
(Brazier), all belong to Bythinella ; J. E. Tenison Woods, P. R. Soc. 
Tasm. 1878 [1879 ], p. 69. 
Frauenfeldia lacheineri (Charp.) var. n. exilis, Mme. Paulncci, Caialogo, 
&c., p. 192 (Gorman edn., p. 71), CastelgofEredo, Prov. Brescia. 
Lithoglyphus clessinianus, sp. n., Paulncci, ibid., Milan, Verona, and 
Monfalcone. 
Lithoglyphus neritinoides and rufo-filosus, spp. nn., E. A. Smith, Ann. 
N. H. (5) vi. p. 426, Lake Tanganyika. 
Spehia, g. n., for Lithoglyphus zonatus (Woodw., 1850) ; Bourguignat, 
Descr. div. Esp. 1879. 
Amnicola paulucciai, sp. n. (Clessin, MS.), Mme. Paulncci, Catalogo, 
&c., p. 191 (German edn., p. 71), Tronto river. Central Italy. 
Amnicola pesinii, sp. n., Morelet, J. de Conch, xxviii. p. 355, Subfossil 
at Tamerna-Djedida, in the Saharan region of Algeria. 
Amnicola ? launcestonensis, sp. n., R. M. Johnston, P. R. Soc. Tasm. 
1878 [1879] p. 24, Tasmania. 
Gerstfcldia, g. n., comprising GodleiosJda (Fisch. & Crosse, 1879) and 
Trachyhaicalia (Martens, 1876), containing the following species : — 
godlewsJcii, turriformis, carino-costulata, wrzesniowskii, and 
carinata (Dybowski), all from Lake Baikal. Clessin, Mai. Bl. (2) ii. 
pp. 187 & 196. 
Paladilhia. 6 known species enumerated, and servaini, sp. n.. Alluvial 
deposits of the Ebro, described by Bourguignat, Description de Ccdestele 
et Paladilhia, pp. 20-22. 
Lartetia cornucopia, sp. n., Stefani, Bull. Soc. mal. Ital. vi. p. 83, 
Alluvial deposits of the Arbia, near Siena, Tuscany. 
RiSSOELLIDiE. 
Jeffreysia edwardiensis, sp. n., Watson, J. L. S. xv. p. 99, Prince Edward 
Island, 46° S. lat., 50-160 fath. 
PALODINID.®. 
S. Clessin discusses the known genera ; Mal. Bl. (2) ii. pp. 161, 165, & 
193. 
Vivipara. List of European species by J. R. Bourguignat [not seen by 
the Recorder]. 
Paludina spehii, sp. n., E. A. Smith, P. Z. S. 1880, p. 485, pi. xltiii. 
fig. 11, East coast of Africa, 6°^7° S. lat. 
Paludina colbeaui, sp. n., Craven, P. Z. S. 1880, p. 216, pi. xxii. fig. 5, 
Nossi-be, Madagascar. 
Neothauma, g. n. Shell like that of Vivijjara, but having the aperture 
effuse and slightly channelled £lt the base, and the outer lip rather deeply 
1880. [voL. XVII.] B 12 
