NEWTON : ON MIOCENE GASTROPODS FEOII EOrXIANIA. 345 



Vienna Basin through Hungary, Croatia, Dalmatia, Eoumania to 

 Southern Eussia. Kousseau originally described it from the neigh- 

 bourhood of Kertch in the Crimea, where it was found associated with 

 Liinncea velutina, Deshayes, Limncea peregrina, Deshayes, Paludina 

 casaretto, Rousseau, and Planorbis rofella, Rousseau (see Bourguignat) ; 

 Congeria aptrfa, Deshayes, Cardhim planum,^ Desh., C. carinatmn, 

 Desh., C. crenulatum, Rousseau, C. acardo, L>esh., and C. modiolare, 

 Rousseau (see Reuss). 



Since then it has been recorded by Reuss from near Arcani in South- 

 Western Roumania, and from near Gran in Hungary (Sitz. k. Akad. 

 Wiss. Wien, 1868, vol. Ivii, pi. iii, figs. 1-3, pp. 92-101). Oscar 

 Lenz refers to its occurrence at Beocsin, Slavonia (Jahrb. k.k. Geol. 

 Reichs., 1873, vol. xxiii, pp. 295-316) ; Brusina has obtained it from 

 Agram in Croatia (Fossile Binnen-Mollusken, etc., 1874, pp. 102, 103); 

 Dr. Sabba Stefanescu records it from the district of Gorjiu, South- 

 "Westem Roumania, an area contiguous to that whence Reuss obtained 

 his examples described in 1868 (Etudes sur les TeiTains tertiaires de 

 Roumanie : Mem. Soc. Geol. France, 1896, Mem. Xo. 15, pi. ix, 

 figs. 34, 35, pp. 103-105) ; and Hoernes has also described it from 

 Croatia (Jahrb. k.k. Geol. Reichs., 1875, vol. xxv, p. 72, pi. iii, 



fig- 0- . . , - 



It may be mentioned that the generic name has undergone various 



orthographical changes. Rousseau dedicated the shell to Professor 



Yalenciennes of Paris, but unfortunately adopted two renderings of 



it in his monograph, viz., in the text as Valenciennius and on the 



plate as Valencienneiisis. To correct this want of uniformity 



Bourguignat^ suggested Valenciennia, and lastly Paul Fischer^ more 



accurately defined the Latinized version of the name by introducing 



Valenciennesia, which is now generally accepted. 



1 As the different species of Cardium here enumerated are of hracMsh-water or 

 lacustrine origin, and moreover differ internally (teeth, etc.) from the true marine 

 forms of the genus, they are now recognized under other generic names, as 

 follows: PhyUocardium plamnn, P. depression {= aenulatum) ; Pontalmyra 

 carinata, P. modiolaris ; Arcicardutm acardo. 



^ J. R. BoTirguignat, " Amenites Malacologiques " : Revue et Magasin Zoologie 

 (Paris), ser.'ii, vol. vii (18o.5), p. 29, pis. i and ii. 



' P. Fischer, " Des genres Camptonyx et Vaknciennesia " : Joum. Conchyl., vol. vii 

 (1858), p. 318. 



