298 AZECA. 



posed to represent the clausilium of the Clausiliae, and which 

 I figured at p. 128 of my monograph. Its rounded basal 

 termination can be seen just above the columellar denticle in 

 the figure of A. tridens. On the penultimate whorl there is 

 merely a slight denticle to represent the twin spirally wind- 

 ing lamellae present in its ally." (Taylor.) 



Subgenus HYPNOPHILA Bourguignat. 



Hypnophila BGT., Amenites Malacologiques ii, p. 88 (Revue 

 et Mag. de Zool. 1858), for A. pupceformis, zacynthia, emil- 

 iana, cylindracea, incerta, psathyrolena. 



Shell oblong, with small oblique aperture; parietal callus 

 thick at the edge, rising into a triangular tooth near the 

 posterior angle; columella more or less truncate at base; 

 aperture otherwise toothless. Type A. pupceformis. 



A Mediterranean group, with species in Greece, Dalmatia, 

 Italy, Sicily and northwestern Africa. Whether it is ana- 

 tomically like Azeca has not been determined. 



Dalmatian jznd Grecian Group. 

 3. A. PUPCEFORMIS Cantraine. PL 47, fig. 9. 



Shell ovate-elliptical, imperforate, thin, smooth, subtrans- 

 lucid, yellowish corneous. Spire conic with somewhat convex 

 sides, the apex but slightly obtuse. Whorls 7 to 8, very 

 slightly convex, regularly increasing, separated by a suture 

 which is margined on the lower whorls; last whorl two-fifths 

 the total length, measured behind, flattened behind the lip, 

 rounded basally. Columella short, subvertical, scarcely arcu- 

 ate> and in oblique view appears truncate at the base. Aper- 

 ture slightly oblique, ovate, slightly compressed at the base. 

 Peristome unexpanded, rather obtuse ; the margins joined by 

 a thread-like callus, which follows the outer edge of the colu- 

 mella to the base, and above, near the insertion of the outer 

 lip, is impressed and bears a glossy white tubercle. Outer lip 

 is somewhat thickened internally in the middle, and some- 

 what straightened below, so that the aperture appears rather 

 pointed there. Length 7, diam. 3 mm. (Kobelt). 



Dalmatia: Zara and Spalatro. 



