36 LAND AND FRESH WATER MOLLUSKS 



Semilimax Stabile, Revue et Mag. Zool. (Guerin), Aug., 1859, p. 41 ; Moll. 



Terr. Viv. Piem., p. 23, 1864. — Kobelt, Cat. der Europ. Faun. leb. Bin- 



nenconch., p. 3, 1871 (as a section of Vitrina, group of V. diaphana 



Drap.). — Pfeiffer, Nom. Hel. Viv., p. 26, 1878. 

 Pagana Gistel, Naturg. Thierr., p. 168, 1848 (new name for Vitrina Drap.). 

 Phenacolimax Stabile, Rev. et Mag. Zool. (Guerin), Aug., 1859, p. 42 ; Moll., 



Terr. Viv. Piem., p. 24, 1864. — Pfeiffer, Nom. Hel. Viv., p. 27, 1878. 

 Helicolimax Kobelt, Cat. der Europ. Faun. leb. Binnenconch., p. 4, 1871, 



(Sect, of Vitrina, s.s.). 

 Trochovitrina Schacko, in Boettger, Jahrb. Deutsch. Mai. Ges., vii, p. 379, 



Oct., 1880; type Vitrina lederi Boettger. 

 Gallandia Bourguignat, Descr. Nouv. Genre Gallandia, Aug., 1880, pp. 4-8, 



1st sp. Vitrina conoidea Martens. 

 Oligolimax Fischer, in Paulucci, Faun. Calabria, p. 37, 1880. — Paulucci, 



Bull. Soc. Mai. Ital. , vn, p. 75, 1881. — Fischer, Man. de Conchyl., 



p. 464, 1883 (V pauluccice Fischer). 

 Parmacellina Sandberger, Land u. Sussw. Conch, d. Vorwelt, p. 232, pi. 



xiii, 1 87 1. Sole ex. P. vitrinceformis Sandb., Eocene. 

 Vitrina Pilsbry, Class. Cat. Landsh. Am., p. 25, 1898. 

 Chlaniydea Westerlund, Fauna d. Pal. Reg., 1, p. 19, 1886 (V. bicolor 



Westerlund, 1881). 



The shell in this group and its allies is reduced to very simple terms 

 and the differences between species appear trifling. But there appears 

 to be quite a wide range of character in the soft parts, from whence 

 it follows that several sections can be recognized in the genus as re- 

 stricted, while some species, formerly regarded as belonging to Vitrina, 

 are now scattered in widely separated genera. 



The true Vitrina seems confined to the northern hemisphere. 

 The following sections are recognized : 



Vitrina Drap. s. s. 1S01. Type V. pellucida Miiller. Helicoli- 

 max Ferussac pere, 1801, is identical, and Semilimax Stabile hardly 

 separable. 



Oligolimax Fischer. Type V. pauluccice Fischer. 



Phenacolimax Stabile, 1859. Type ^ ma j or Fer. 



Gallandia Bourguignat, Aug., 1880. Type V. conoidea von 

 Martens. Trochovitrina Schacko, Oct., 1S80, is synonymous. 



The North American and Greenland species are true Vitrina, the 

 other forms belong to the Old World only. 



The New World groups Vitrinozonites Binney and Velifera Binney 

 may be regarded as of generic rank, and are extra limital to the region 

 now under discussion. 



Vitrina angelicae Beck. 



Vitrina angelica Beck, Index, p. 1, 1837 ; name only. — Moller, Index, p. 4, 

 1842. — Morch, Am. Journ. Conch., iv, p. 27, pi. in, figs. 1, 4, 1868. — 

 Morch, in Rink's Danish Greenland, p. 436, 1877. 

 Helix pellucida Fabricius, Fauna Gronl., p. 389, 1780, not of Miiller, 1774- 



