HELIX-FRUTICICOLA. 189 



rudely arcuately striated, little shining, unicolored, horny-rufescent, 

 with obsolete pale peripheral zone ; whorls 6, slowly and regularly 

 increasing, separated by an impressed suture ; the upper whorls 

 slightly convex ; last inflated, slightly subangulate in front, becom- 

 ing rounded ; descending at first slowly and then distinctly to the 

 aperture. Aperture oblique, ovate-rotund, lunate ; peristome thin, 

 fragile, straight, very delicately lipped with white within ; margins 

 distant, columellar margin dilated at the insertion and reflected 

 over the perforation. (JToft.) 



Alt. 12, greater diam. 18, lesser 16 mill. 



Eastern Algiers and Tunis. 



H. rusicadensis LET., Kalybie, i, p. 222 ; Ann. Malac. i, 1870, p. 

 298. LET. & BGT., Prodr. Mai. Tunisie p. 8. KOBELT, Kossm. 

 Icon. n. f. iv, p. 80, f. 665. 



H. ZONITOM^EA Letourneux. PI. 40, figs. 55, 56, 57.* 



Shell profoundly perforated, subglobose, thin, fragile, pellucid, 

 obliquely rudely striated, hardly granulated ; horny- white ; apex 

 buff', minute, smooth, somewhat projecting ; spire depressed-conoid. 

 Whorls 6, slowly and regularly increasing, slightly convex, ang- 

 ulate, separated by an impressed suture ; last whorl subangulate, 

 the angle disappearing toward the aperture ; base rounded, passing 

 abruptly into the perforation ; scarcely descending in front. Apert- 

 ure ovate-rounded, lunate, produced above, oblique ; peristome thin, 

 straight, fragile, slightly and very delicately labiate, margins dis- 

 tant, joined by a very thin callus; columellar margin slightly 

 expanded above the perforation. (Kob.') 



Alt. 15, diam. 22 mill. 



Kalybie. 



H. zonitomcea LET., Exc. en Kalybie, in Ann. Mai. ii, p. 38, f. 15- 

 17. KOBELT, Rossm. Icon. n. f. iv, p. 81, f. 666. 



Allied to H. faidherbiana Bgt. 



Unfigured species of Fruticieola. 



HELIX PEDEMONTANA Pini, Atti Soc. Ital. Sci. Nat. xxvii, p. 248. 

 Near rufescens and telonensis. 



HELIX ERITHROCHEILA Sulliotti, Bull. Soc. Mai. Ital. xiv, p. 40, is 

 a new name proposed for Helix rufolabris of authors, not rufilabris 

 Jeffr. 



