TERTIARY VERTIGININAE. 223 



conoidea Nc., which has some resemblance in figure and teeth. 

 The entirely different and peculiar sculpture of conoidea, 

 which belongs to the genus Bothriopupa (Vol. XXIV, p. 231), 

 together with other differential features, shows that the sup- 

 posed affinity is improbable. Prof. Boettger had not seen a 

 specimen of conoidea. Pseudelix has a somewhat specialized 

 shape, and appears to have left no survivors or no closely 

 related genera. 



The nomenclature of the two species is not clear to me, 

 Boettger ? s synopsis is followed. 



PSEUDELIX MICROHELIX (Sbgr.). Pupa microhelix SAND- 

 BERGER, Mainzer Becken, p. 61, pi. 35, f . 26 ; Vorwelt, p. 402, 

 pi. 23, f. 18. 



PSEUDELIX COMES Boettger. Jahrb. Nassau. Ver. Naturk. 

 1889, p. 317. Helix piipuU Al. Braun, in Walchner's 

 Geognosie, 2d ed., p. 1139. Pupa microhelix in part, SAND- 

 BERGER, Mainzer Becken p. 61, pi. 3, f. 8. Upper Oligocene 

 landshell chalk of Hochheim. 



Genus Carychiopsis Sandberger. 



Fusulina SANDBERGER, olim. Carychiopsis SANDBERGER, 

 Land und Siisswasser-Conch. der Vorwelt, pp. 169, 170 (1872), 

 type Pupa dohrni [dhorni] Deshayes. 



A group of minute, slender Pupoid snails, chiefly Lower 

 Eocene, contains the species Pupa remiensis, alternans, ~bige- 

 minata, dhorni ( dohrni Dh., Sandberger) and coarctata, all 

 of Deshayes (Anim. s. Vert. Bassin Paris, ii, 1864, pp. 853- 

 856). Some of these have been referred to Vertigo by subse- 

 quent authors, but in the opinion of Sandberger, which appears 

 well founded, they have no special affinity with that genus, but 

 belong near Carychium. 



Pupa interferens Desh. may possibly also belong to this 

 group, though somewhat different. It has the general appear- 

 ance of Gastrocopta. 



Carychiopsis costulata Sandberger ', t. c., p. 371, of the Lower 

 Miocene of Germany and Bohemia, is the latest known member 

 of the group. Pupa schwageri Reuss, Sitzungsber. d. k. Akad. 

 "Wiss. Wien Ivii, p. 82 is synonymous. 



