HELICELLA. 253 



aunica Fag., maladettse (B.) Fag., sabulivaga and mareillyana 

 Mab., nephseca Fag., homoleuca Parr., tauchoniana Bgt., tennis- 

 culpta West. 



Section Xerocampylcea Kobelt, 1871. 

 Xerocampylcea KOB., Catalog, p. 15, footnote, for H. zelebori. 



Shell depressed with horn-colored apex and wide last whorl with 

 rounded periphery ; rather thin and white with 2 bands (or none), 

 umbilicus funnel-shaped but very small. Aperture transverse oval,, 

 the lip dilated at columellar insertion partly covering umbilicus. 

 Type H. zelebori Pfr., pi. 43, figs. 29, 30. 



Genital system as in Helicella, two dart sacks being developed. 

 Distribution, Bosnia, Servia. Formerly referred to Campylcea, but 

 now admitted to belong to the Xerophita group. 

 H. zelebori Pfr., iv, 83. 



The following forms or varieties of Zelebori are distinguished by 

 French new school authors : bortana, adarella, carosina, ottoi, twar- 

 tkoi, nactara and acaria Servain. 



Section Candidula Kebelt, 1871. 



Helicopsis FITZ., Syst. Verzeich Weichthiere, etc., 1833, p. 101. 

 H. striata the sole species. Not Helicopsis Fab., 1808 (Lepidoptera), 

 Striatella WESTERLUND, Fauna Eur. 1876, not of Brot (Melani- 

 idce). Candidula KOBELT, Catalog., 1 871 , p. 22. Xerolena MONTS., 

 Moll. Terr. Isole adiacenti Sicil. 1892, p. 22 (for jET. virginalis, ham- 

 ilcaris, ingoi). Xerotringa MONTS.. I. c. (for H. tringa, phari, paren- 

 tina, meridionalis, su6sn'ata), group Oisalpinana Fagot. Xe.ro- 

 vaga MONTS., I. c. (for H. eaperata, heripensis, gigaxii, andalusica). 

 Xeroalbina MONTS., t. c., p. 23 (for Candidula, unifasciata, gratiosa, 

 striata). Xeromicra MONTS., 1. c. (for H. apicina). Xerotricha 

 MONTS., 1. c. (for H. conspurcata). Xeroclavsa MONTS., t. c., p. 22 

 (for meda). Striatella CLESSIN, Deutsche Exc. Moll. Fauna, p. 149 

 1876, (for H. candidula, H. striata'). 



Shell rather small, depressed, narrowly umbilicated, solid and 

 chalky ; the surface striated ; apex corneous or dark ; whorls about 

 4, the last rather wide and rounded. Aperture round-lunate, lip 

 simple, strengthened by a submarginal rib within. Type H. 

 candidula, pi. 68, fig. 28. 



