GUDE & WOODWARD : ON HELICELLA, FERUSSAC. 183 



Subgenus helicopsis, s.s. 

 Type, Helix striata, Miiller. 

 1833. Helicopsis : Fitzinger, Beitr. Landesk. Oesterr., iii, p. 101. 



1871. Candidula : Kobelt, Cat. Europ. Binnenconch., p. 22. 

 1876. Striatinella : Clessin, Deutscb. Excur. Moll. Fauna, p. 149, 



1876. Slriatilla : Westerlund, Fauna Europ. Moll. Extramar., p. 105. 



[Non Brot, 1874, (Melaniidse).] 

 1892. Xerodausa: Monterosato, Atti R. Accad. Palermo, ser. in, 

 vol. ii [Classe Sci., No. 2], p. 22 (with the further sectional 

 names : Xerolena, Xerotringa, Xerovaga (p. 22) ; Xeroalhina, 

 Xeromicra, and Xerotricha (p. 23)). 



Subgenus monilearia, Mousson, 1872. 



Type, Helix phalerata, Webb & B. (selected by Pilsbry, 

 1895). 



1872. Monilearia: Mousson, Neue Denkschr. Allg. Schweiz. Gesell., 



XXV [No. 1], p. 39. 



Subgenus jacosta, Gray, 1821. 



Type, Helix albella, Draparnaud = explanata, Miiller. 



1821. Jacosta : Gray, Lond. Med. Repos., xv, p. 239. 



1885. Numidia : Issel, Ann. Mus. Civ. Genova, ser. ii, vol. ii, p. 8. 



1892. XerofaUa : Monterosato, Atti R. Accad. Palermo, ser. in, vol. ii 



[Classe Sci., No. 2], p. 21 (with the further sectional names : 

 Xerosecta, Xeroplana (p. 21) ; Xeroamanda, Xerom esta 

 (p. 22) ; Xerocodia, Xeroplexa, and Xerotropis (p. 23).) 



1 893. Tropidocochlis [pars] : Locard, Echange, ix, p. 97. 



Subgenus xeeoleuca, Kobelt, 1877. 

 Type, Helix turcica, Chemnitz. 



1877. Xeroltuca : Kobelt, Jahrb. Deutsch. Malak. Gesell., iv, p. 25 [in 



text]. Reprint, as supplement to his " Catalog ", p. 13. 



Subgenus obelus, Hartmann, 1812. 



Type, Helix Preaiixii [i.e. despreauxii. Orb.]. 

 1842. Obelus : Hartmann, Erd.- * Siissw.-Gastrop., p. 158. 

 1892. Xeroptyca : Monterosato, Atti R. Accad. Palermo, ser. in, 

 vol. ii [Classe Sci., No. 2], p. 25. 



Subgenus xeroclivia, Monterosato, 1892. 

 Type, Helix elegans, Gmelin.^^ 



1837. Turricula : Beck, Index Moll., p. 10. [Non Hermann, 1783 



(Gastr.) ; nee Schumacher, 1817 (Pleurotomidse).] 



1838. Trochula : Schliiter, Kurz. syst. Verzeichn., p. 7. [Non 



Trochulus, Humphrey,^^ 1797 (= Monodonta) ; nee 

 " Trochulus, Christ.", Gray, 1817 [Helix hispida, Linn.) ; 

 nee Trochulus, Westerlund, 1886 (Petasina fiilva, Miill.).] 



" Trochoidea, Brown (lUust. Conch. Gt. Brit., 1827, pi. xli, f. 80, 81), has 

 been quoted for this subgenus under the belief that the Trochus ierrestris of 

 Pennant was the Helix elegans of Gmelin, whereas it was the Helix fulva of 

 Miiller without doiibt. 



^^ Even if Humphrey's names in his " Museum Colonneanum " be set 

 aside, the name Trochulus is so sure to have been quoted in some work that it 

 is safer to suppress it. 



