400 THE TERRESTRIAL MOIyLUSCA INHABITING 



This species, which is rather abundant, is diffused throughout all the groups in 

 Southern Polynesia, ranging west to the Viti Islands. 



It is more robust and lighter colored than oblonc/a, and the spire is more taper- 

 ing, body whorl larger, more depressed, parietal lamina more prominent, and the 

 columella more twisted. 



GENUS YERTIGO, MuUer. 

 V. PEDICULUS, Shuttleworth. 

 Fupa pediculus, Shutt., Bern. Mitth , 1852, p. .296. Pfeiffer, Mon. Hel., iii. p 557; iv. p 684; 



vi. p. 330; viii. p. 402. Scbmeltz, Cat. Mus. Godeff , v. p. 89. Mousson (var. samoensis), 



Jour, de Conch., 1865, p ItS. 

 Vertigo pediculus, Pfeiffer, Vers., p. I'll. {Alsea) H & A. Ads., Gen. Moll., p. It2. Mousson, 



Jour, de Conch., 1869, p. 341; 1810, p. 121; 1871, p. 15; 18*13, p 106. Pease, Proc. Zool. 



Soc, 1811, pp. 463, 474. Garrett, Proc. Phil. Acad. Nat. Sci., 1879, p. 19. 

 Pupa samoensis, " Mss." Schmeltz, Cat. Mus. Godeff., iv. p 69. (Sphyradium) Paetel, Cat. 



Conch., p. 108. 

 Fupa nitens, Pease, Proc. Zool. Soc, 1860, p. 439. Pfeiffer, Mon. Hel., vi. p. 335 ; viii. p. 407. 

 Vertigo nitens, Pease, Proc. Zool. Soc, pp. 463, 474. 

 Pupa hyalina, "Zelebor," Pfeiffer, Mon. Hel., v. p. 329; viii. p. 401. 

 Vertigo hyalina, Pease, Proc. Zool. Soc , 1871, p. 474. 

 ? Vertigo nacca, Gould, Proc. Bost Soc. Nat. Hist., 1862, p. 280; Otia Conch., p. 237. Pease, 



Proc Zool. Soc , 1871, pp. 463, 474. 

 Pupa nacca, Pfeiffer, Mon. Hel., vi. p. 330; viii. p. 402. 



With the exception of Stenogyra Tuckeri, this minute species has the widest 

 range of any other Polynesian land shell. 



For further information in regard to the history and variations of this species 

 see my paper on the Rurutu Land Shells, published in the Academy's Proceedings. 



Y. TANTILLA, Gould. 



Pupa (Vertigo) tantilla, Gould, Proc Bost. Soc Nat. Hist., 1847, p. 197. Pfeiffer, Mon. Hel., 

 iii. p. 557; iv. p. 684; vi p. 330; viii. p. 402. (Vertigo) Mousson, Jour, de Conch, 1870, 

 p. 127. (Vertigo) Schmeltz, Cat. Mus Godeff, iv. p. 69; v. p. 89. (Pupilla) Paetel, Cat, 

 Conch , p. 108. 



Vertigo tantilla, Gould, Ex. Ex. Shells, p. 92, PI. 7, fig. 103. (Alssa) H. & A. Ads., Gen. Moll., 

 p. 172. Pease, Proc. Zool. Soc, 1871, pp. 460, 463, 474. 



Pupa Dunkeri, "Zelebor," Pfeiffer, Mon. Hel., vi. p. 333; viii p. 401. 



Vertigo Dunkeri, Pease, Proc. Zool. Soc , 1871, p. 474 



Vertigo armata, Pease, Proc. Zool. Soc, 1871, pp. 261, 474. 



Pupa armata, Pfeiffer, Mon. Hel., viii. p. 407. 



Vertigo dentifera, Pease, Proc. Zool. Soc, 1871, pp. 462, 474. 



Pura dentifera, Pfeiffer, Mon. Hel., viii. p. 408. 



This species appears to be widely diffused throughout Southern Polynesia; 



