182 PROCEEDINGS OP THE MALACOLOGICAL SOCIETY, 



Subgenus xerocrassa, Monterosato, 1892.^^ 

 Type, Helix seetzeni, Koch. 



1892. Xerocrassa : Monterosato, Atti R. Accad. Palermo, ser. iii, 

 vol. ii [Classe Sci., No. 2], p. 23. 



Subgenus cernuella, Scbliiter, 1838.^" 



Type, Helix variabilis, Draparnaud (= virgata, Da Costa). 



1838. Cernuella : Schliiter, Kurz. syst. Verzeichn., p. 6. 



1840, 1 Heliomanes: Brown.^'o Illust. Conch. Gt. Brit., ed. 2, p. 49. 



Se t I ^■^°'^ Newman, March, 1840 (Coleopt.).] 



1856. Heliomane [err. typ. ?] : Moquin-Tandon. Hist. Moll. France, ii, 

 p. 259. 



1892. Xeroampidla : Monterosato, Atti R. Accad. Palermo, ser. iii, 

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

 names : Xerojuftca (p. 22) ; Xerolauta, Xerolincta, Xerolceta, 

 Xerovaria (p. 23) ; Xerambigua, Xerolutea, Xeromagna, 

 Xeropicla, Xerobulla (p. 24) ; Xe.romunda, Xerocaufa, 

 Xerovera, and Xerolissa (p. 25)). 



Subgenus xerophila, Held, 1837. 



Type, Helix itala, Linne (selected under the synonym of 

 H. ericetorum, Miiller, by Von Martens, in Albers 

 "Heliceen", 1860). 



1837. Xerophila : Held, Isis, xxx, hft. 12, col. 913. 



1876. Planatella : Clessiii, Deutsch. Excur. Moll. Fauna, p. 143. 



1879. Fseudoxerophila : Westerlund, in Westerlund & Blanc, Apercu 

 Faune Malac. Grece, p. 55. 



1892. Xerolenta : Monterosato, Atti R. Accad. Palermo, ser. iii, 

 vol. ii [Classe sci., No. 2], p. 24 (with the further sectional 

 names : Xerolaxa, Xerofriga, Xerogyra, and Xerocincta). 



Subgenus xerocampyl^a, Kobelt, 1871. 



Type, Helix zelehori, Pfeiffer. 



1871. Xero-Campylcea : Kobelt, Cat. Europ. Binnenconch., p. 15, 

 foot-note. 



2^ The title-page of the volume bears date 1893, but on the back wrapper it 

 is given as 1892. It was received at the Natural History Museum, 15th 

 January, 1893. 



^^ This genus of Schliiter has been overlooked by all but three authorities. 

 Hermannsen (Ind. Supp., 1852, p. 27) followed by Paetel (Fam.- und Gatt.- 

 Namen Moll., p. 39), who both put it under Teba, Leach, without indicating 

 any type for either. H. and A. Adams (Genera Moll., ii, 1855, p. 215), who 

 cite it as a synonym for their " Genus Theba, Risso " and give as examples 

 T. virgata. Da C, and T. pisana, Miill. No type having, therefore, been fixed 

 we select Helix variabilis, Drap. = virgata. Da C, as the type and use Schliiter's 

 name for this subgenus. 



='" As already noted, neither Ferussac, 1821, nor Gray, April, 1840, employed 

 this name in either a generic or subgeneric sense. 



