BIBLIOGRAPHY OF 1877. 293 



by Mr. Waters. It also included the following new species :— 

 Bulimus Balstont, allied to another Madagascan species, B. 

 davatorVetit de la Sauss. ; Helix Watefsi, allied to If. sepulchralis ; 

 H. Ekongensis ; H. Balstoni, which greatly resembles the Indian 

 H. semidecussata Pfr.; and Physa Madagascarie7isis. 



Baudon (Dr. Aug,)— Supplement to his Monograph of 

 French Succinea. — Supplement a la Monographie des 

 Succinees frangaises. — Journal de Conchyl., Oct. 1877, 36 

 serie, tome xvii., pp. 348 to 355 and planche xi. 



Succinea Crosseana (pi xi., f. i), from canton of Villefranche- 

 Lauragais; and -5". breviuscula (pi. xi., f 2) from Aulus-les-Bains, 

 are described and figured as new. The paper concludes with 

 observations on ^. elegans, S. piitris and S. acrajnbleia. 



Belt (Thomas). — Introduction of Foreign Land and 

 Freshwater Mollusca. — Zool,, July 1877, 3rd series, i., 

 p. 302. 



Mr. Belt suggests that Corbicida {Cynna) fluminalis from 

 the Nile, Paludina marginata and Unio littoralis from France, 

 all of them inhabitants of Britain in the palaeolithic age, should 

 be reintroduced in sufficient quantities to give a fair chance of 

 acclimatization, with the view of solving the problem of the 

 climatic condition of Britain at the time when palaeolithic man 

 co-existed with the Hippopotamus, Elephant and Rhinoceros. 



Boettger (Dr. O.) — Diagnoses of New Forms of Clausilia. 



■ — Diagnosen neuer Clausilienformen. — Nachrichtsblatt d. 

 Deuts. Mai. Ges., Aug. 1877, ix., pp. 65 to 76. 



The new forms are : — Clausilia la/ninata, Mntg., var. 

 triloba, from Croatian military frontier; C pelagosana nov. forma, 

 I Lymficea and i Nerita — was made at Ekongo on the S.E. coast 



