VERTIGO. 



249 



Pupa unicarinata, Binnky, Terr. Moll. I, is the same as Macroccrumus 



kieneri. 

 Pupa tiehrascana, of Wakren's Reportpf Surveys, &c. Ex. Doc. II, pt. 2, 



35th Coug. 1859, p. 725, may perhaps be P. contractu. 



Fossil Species of Pupa. 



Pupa helicoides, Meek & Hayden, Proc. Acad. Nat. Sci. Philad. VIII, IIS. 

 Pupa vetusta, Dawson, Geol. Soc. Proc. 1852, IX, 60, pi. iv (DcuJrojmjni, 

 Owen). 



VERTIGO, McLL. 



Shell deeply rimate, ovate, apex acuminate obtuse ; whirls 

 5-6, the last rounded ; aperture semioval, with 

 four to seven folds ; peristome scarcely ex- 

 panded, white-lipped 



Tentacles wanting. 



Jaw smooth or with longitudinal wrinkles, 

 subrostate. 



Lingual membrane broad, central teeth tricuspid, laterals 

 bicuspid or serrate, uncini serrate. 



Fig. 434. 





Shell dextral 



Lingual dentition of Veitigo ovata. [Mouse.] 



Subgenus ISTHMIA, Gray. 



Fig. 435. 



Vertigo goilldii, Bisney. — Shell light chestnut, cylindrical ovate; 

 •whirls rather more than four, ventri- 

 cose, the last occupying nearly one- 

 half the length of the axis ; aperture 

 lateral, composed of two unequal 

 curves meeting in the centre of the 

 peristome, with five prominent, white 

 teeth, namely, one upon the trans- 

 verse margin, two upon the umbilical 

 margin, and two upon the labial Vtrtioo guuldii. 



