C.KCIL1OIDES OF NORTH AFRICA. 21 



arcuate, truncate, scarcely reaching to the base, the margins 

 joined by a thin callus, bearing a small projecting tubercle on 

 the convexity of the penult, whorl. Length 4.5, diam. 1.5 

 mm. (Bgt.~). 



Algeria: Mostaganem, type loc. ; also Bone, Philippeville, 

 Algiers, Orleansville, etc., etc.; Tunis in the debris of the Oued 

 Sidi-Aich and of the Medjerda near Ghardimaou. 



C&ciliane.lla raphidia BGT. , Rev. et Mag. Zoo!., viii, 1856, p. 

 386, pi. 12, f. 9-11; Amen. Mai., i, p. 218, pi. 18, f. 9-11; 

 Malac. del'Algerie, ii, p. 115, pi. 8, f. 7-9; Prodr. Mai. Tunisie, 

 p. 127. PFR., Monogr., iv, 624. 



11. C. NANODEA Bourguignat. PI. 3, fig. 36. 



Shell dwarfed, obese-fusiform, very slender, polished, whitish; 

 apex obtuse; whorls 5, subplanulate, separated by a distinct 

 suture, the last whorl half the total length. Aperture narrow, 

 oblong-elongate; peristome unexpanded, acute, simple; right 

 margin slightly arched forward ; columella rather straight, trun- 

 cate, not reaching to the base of the aperture; margins joined 

 by a thin callus. Length 2.5, diam. 0.33 mm. 



Algeria: Around Bone, type loc. ; Tunis in debris of the Med- 

 jerda at the bridge of Fondouck. 



Cacilianella n. , BGT., Rev. et Mag. Zool., viii, 1856, p. 427, 

 pi. 12, f. 12-14; Amen. Malac., i, p. 221, pi. 18, f. 12-14; 

 Malac. Algerie, ii, p. Ill, pi. 8, f. 4-6; Prodr. Malac. Tunisie, 

 p. 128. SERVAIN, Conch. Portugaise, 1899, p. 142. 



Distinguished from C. subsaxana by the less truncate colu- 

 mella without a callosity, the non-marginate suture, and less 

 forwardly arched outer lip. It has been reported from Faro 

 Algarve, Portugal, by Servain. 



12. C. LETOURNEUXI Bourguignat, PL 3, figs. 43, 44. 



Shell minute, elongate-subfusiform, very slender, smooth, 

 hyaline-whitish; spire long lanceolate, obtuse above, the apex 

 very obtuse. Whorls 7, subplanulate, regularly and rapidly 

 increasing, separated by an impressed suture, the last whorl 

 one-third the total length. Aperture minute, oblong, acutely 

 angular above; peristome unexpanded, acute. Columella short, 



