1898.] NATURAL SCIENCES OF PHILADELPHIA. 267 



504 tortuosa Chemn. [= Tortulosa tortuosa, an oriental operculate). 



505 gracilicollis nobis, [iiomen nudum~\. 



506 perplicata nobis, [iiomen nudum\. 



507 collaris nobis. [=='Oylindrella]. 



508 subula nobis, \_nomen nudum"]. 



509 antiperversa nobis, [iiomen nudum]. 



ft Aperture armed with large folds or long teeth. 



510 gargantua nobis \_nomen nudum=Odontostomus]. 

 ** Shell sinistral. 



1. Aperture without laminse. 



Troisieme groupe. Les Anomales, Anomales ; Pup>a Drap. 



511 perversa L. [=Balea]. 



512 chemnitziana nobis. [Cylindrella elongata Chemn.]. 



2. Aperture armed (with laniinse or an elastic operculum). 

 Quatrieme groupe. Les Clausilies, Clausilia^; genre clausilie Drap. 



[Includes the species of Clausilia, with some nomina nuda per- 

 haps pertaining to other groups]. 



It will be seen that Cochlodina is a miscellaneous group, including 

 species of at least six modern genera, all of which have since been 

 named. Under these circumstances it had better be left as a 

 synonym of Clausilia, as the diagnosis precludes its use for any of 

 the other groups included. 



1828. Brachypus Guilding, Zool. Journal, III, p. 167. Pro- 

 posed for B. costatus Gldg. Preoccupied in Aves by Swainson, 

 1824, and in Diptera by Meigen in the same year. 



1837. Urocoptis Beck, Index Moll., p. 83. Species, petiverana 

 Fer., blainvilliana Fer., cylindrus Ch., Dw. and Wood ; rosata Fer., 

 ■glandula B., abbreviata B., coardata B., List H., XXI, 17; trunca- 

 tula Lam. (Clausilia), gracilicollis Fer. 



J. E. Gray, in Proc. Zool. Soc. Lond., 1847, p. 177, selects 

 <l Turbo " cylindrus as type. This would make the group equivalent 

 to Thaumasia Alb. a later name. Von Martens, in Die Heliceen, 

 1860, names decollata Nyst as type. This species belongs to Crosse 

 and Fischer's later group Eucalodium ; and as it does not appear in 

 Beck's original list of species, must be rejected from the group. 

 Urocoptis is the earliest tenable name for any genus of the family. 



1837. Brachypodella Beck, Index Moll., p. 89. Proposed for 

 perplieata Fer., collaris Lam., subula Fer., antiperversa Fer. 



