292 



ON SOME TEEOCCUPIED MOLLUSCAN NAMES (GENEEIC AND 



SPECIFIC). 



By G. K. GuuK, r.Z.S. 



Read 10th January, 1913. 



On some former occasions I liave already pointed out that in 

 several cases molluscan nomenclature required revision, and these 

 Proceedings have been made tlie cliannel for publishing the results 

 of ray investigations. 



In the course of my further work upon European Tertiary non- 

 marine mollusca in the Collection of the British Museum I have 

 recently come across some additional instances which it has been 

 thought desirable to place on record. 



The first case is that of Diana, a section of Pi/rgula, proposed by 

 Clessin in 1878,' the type being Pyrgula Thiesseana, Clessin,* from 

 Greece. 



The name Diana having already been employed on two previous 

 occasions, i.e. by liisso, 1826, in Pisces, and by Lapparent and Gory, 

 1837, in Coleoptera, a new designation becomes necessary. Wliile 

 following lirusina^ in according it generic rank, I propose to modify 

 the name to DianeUa, nom. mut. 



The other cases referred to are specific names. 



In 1838 Eichwald* described a shell from the Caspian Sea under 

 the mime oi Faluditia pusilla, which later ^ he figured. Some shells 

 of this species having been acqviired by the British Museum from 

 a Miocene (Pontian) deposit in the Island of Tcheleken, Caspian Sea, 

 I discovered, in looking up the literature of the species, that Basterot 

 in 1825® referred a species from the Eocene (Bartonian), previously 

 described by Brard^ as Bulimus pusiUus, to the genns Paliulina, in 

 which course he was followed by Deshayes.* Eichwald's name not 

 being available for the Caspian form, especially since both this and 

 the French shell are referable to Paludestrina, I propose to change 

 the former to Paludestrina Newtoni., nom. mut. In associating with 

 this species the name of our esteemed President, I desire to express 

 my appreciation of the invariable courtesy I have received at his 

 hands, and of the readiness, shown on so many occasions, with which 

 he has placed his extensive knowledge, both stratigraphical and 

 palaeontological, at my disposal. 



The next species to be dealt with is Paludina ovata, Dunker,* 



' Malak. Blatter, vol. xxv, p. 127. 



' Loc. cit., p. 127, pi. v, fig. 8. 



' Icon. Moll. foss. tert. Hungarise, etc., 1902, expl. pi. vii, figs. 33-8. 



■* Bull. Soc. Imp. Naturw. Moscow, 1838, p. 153. 



'■' Faune Casjno-Caiicasica, 1841, p. 204, pi. xxxviii, figs. 12, 13. 



" Mem. Soc. Hist. Nat. Paris, vol. ii, p. 31. 



^ Ann. Mus. Hist. Nat. Paris, vol. xv, p. 377, pi. xxiu, fig. 3, 1810. 



* Descr. Coq. foss. Env. Paris, vol. ii, p. 134, pi. xvi, figs. 8, 4, 1825. 



" Palseontogr., vol. i, p. 159, pi. xxi, figs. 10, 11, 1848. 



