HELIX-HELICELLA. 171 



strongly and irregularly striated above and below, the striae somewhat 

 flexuous. 



Spire subconoidal, apex obtuse ; apical 1 whorls dark corneous; 

 following one or two whorls are speckled with translucent brownish ; 

 whorls 6, slowly increasing, the last much wider, very gradually 

 descending in front, well rounded at the periphery and beneath. 

 Aperture oblique, rotund-lunate, pure white within, and having a 

 thin white thickening a short distance in. Columellar margin 

 dilated. 



Alt. 11, diam. 13! mill. 



Alt. 10, greater diam. 14, lesser 12 mill. 



Near Bollene, Dept. Vaucluse, France. 



H. bollenensis Loc., Cat. gen. Moll. Fr. ii, p. 323. KOBELT, 

 Rossm. Icon. n. f. iv, p. 93, f. 704. H. lauracina FAGOT, Diagn. 

 d'esp. nouv. 1884, p. 3. 



Allied to H. variabilis, but the umbilicus is smaller, the lip-callus 

 white, and the surface far more strongly striated. The specimens 

 before me were sent by Locard. 



H. lauracina Fagot, of which authentic specimens from the orig- 

 inal locality are before me, offers no differential characters what- 

 ever. 



H. VARIABILIS Drap. (Vol. Ill, p. 230.) 



Judging from specimens before me named by Arnould Locard, 

 the following are synonyms : H. lautaretina Bgt., jussiana Bgt., 

 grannonensis Bgt., salentina Blanc, menclranoi Servain. 



H. SUBMARITIMA Desmoulins. This name is declared by Pollon- 

 era to have precedence over that of lauta Lowe (Vol. Ill, p. 239). 

 The species occurs at Rome and many other localities in Italy. See 

 Bull. Soc. Mai. Ital. xiv, p. 62, pi. 2, f. 8-10. 



H. TERVERI Mich. (Vol. Ill, p. 240.) 



A comparison of specimens of H. arenivaga Mabille received from 

 Locard, with specimens of terveri received from Terver, convinces 

 me that they are specifically identical. 



H. TREPIDULA Servain. PI. 38, figs. 17, 18. 



Shell depressed, openly umbilicated, the umbilicus contained 62- 

 7 times in the diameter of the shell ; solid, opaque, soiled white, uni- 

 colored or having obsolete brown bands. Surface having fine, 

 slightly irregular, oblique striae. Spire very low conic, the apex 



