Bihliograpli ical Notice. 



435 



The following ajipear to have continued from the Miocene brackish- 

 water beds : — 



Molaniii Esclieri, Brongn. 

 Mclanopsis inconstans, yeum. 



Bouei, F6r. 



vindobonensis, Fiichs. 



Noritina iiivosa, Brus. 



Neritina picta, Fir. 

 Ilelix turonensis, Desk. 



poinatia, L. 



Dreiseena polymorpha, Pall. 



From the Miocene freshwater beds : — 



Melania Escheri, Brongn. 

 Melanopsis prremorsa, L. 



Esperi, Fir. 



acicularis, Fir. 



improssa, Kraicss. 



Hjdrobia stagnalis, Bast. 



From the Pliocene Conseria-beda :- 



Bythinia croatica, Bru.'i. 

 Neritina callo«a, Meiieg. 

 Dreissena Fuchsi, Pilar. 



triangularis, Purtsch, 



balatonica, Partsch. 



Hjdrobia stagnalis, Bast. 

 Bythinia tentaculata, L. 

 Vivipara bifarciuata, Bide. 



Yalonciennsia annulata, Rousseau. 



Pauli, R. Hiirn. 



Pisidium amnicum, Miill. 



All the other Dalmatian species come from the Pliocene freshwater 

 marl; and the Croatian and Slavonian from the freshwater Palu- 

 dina-clays, which the author regards as different from the true 

 Congeria-beds. 



The relationships of all the fossil species with those now found in 

 the several " Regions" deliued by naturalists are fully treated of. 



The genera under notice are : — 



Amnicola (2 spp.). 

 Ancylus (1). 

 Bythinia (3). 

 Dreissena (11). 

 Emmericia, 7iov. gen. (2). 

 Fosearuluo (3). 

 Hehx (5). 

 Hyalina (1). 

 Hydrobia (5). 

 Limnaca (4). 

 Lithoglyphus (2). 

 Meliinia (1). 

 Melanopsis (24). 



Neritina (9). 

 Pisidium (2). 

 Planorbis (G). 

 Prososthenia (4). 

 Pyrgula (2). 

 Sphffirium (1). 

 Stalioa, nov. gen. 

 Succinea (2). 

 Unio (20). 

 Valenciennsia (3), 

 Valvata (3). 

 Vivipara (28). 



(2). 



Descriptions of the 139 species, and of some genera in particular, 

 follow, illustrated by the seven lithographic plates. 



In an appendix, on the shells found in the Congeria-beds of Agram, 

 Sp. Brusina treats of additional species belonging to 



Ampullaria (1). 

 Cardium (17). 



Cyclostomus (1). 

 Dreissena (3). 

 Hydrobia (1). 

 Limnsea (2). 



Lithoglyphus (1). 

 Melanopsis (2). 

 Micronielania, nov. gen. (5). 

 Planorbis (3). 

 Pyrgula (1). 

 Valvata (3). 



The author has worked con amove and to good purpose. He shows 

 his results often in useful tables and classified lists. The printing 

 of the memoir is good ; and the lithographB are bold, careful, and 

 natural, though somewhat poorly printed. 



