AZECA. 297 



in the outer lip or throat. Outer lip but little excised above. 

 Length 7.5, diam. 3 mm. (Westerlund) . 



France: Bouilly, Aube. 



Azeca &., FAGOT, Monogr. Azeca p. 8, in Bull. Soc. Scient. 

 Pyr.-Or., xxii, 1876. Cionella &., WESTERL. Fauna, p. 149. 



2. A. ELONGATA Taylor. PL 46, fig. 6. 



' ' Shell of an elongate form, composed of about 9 l / 2 slightly 

 convex whorls, increasing gradually in size, of a yellowish- 

 brown or chestnut colour, smooth and glossy, with very in- 

 distinct striae; periphery rounded, spire produced and blunt 

 at the apex, suture impressed, mouth pyriform, acutely angled 

 posteriorly with a 'broad marginal callosity margined on the 

 penultimate whorl and columella by a raised thread-like rib, 

 and furnished with a strong and somewhat posteriorly in- 

 clined denticle on the middle of the outer margin, an an- 

 teriorly convex, simple pointed denticle at the base of the 

 columella, and on the penultimate whorl there is a small den- 

 ticle about midway between the outer lip and the columella. 

 Length 9, breadth 2.5, aperture 2.5 mm. long." (Taylor.) 



England : Ingleton, Yorkshire, type loc. ; North Wales. 



Azeca elongata TAYLOR, The Naturalist, London, March, 

 1897, p. 75, fig. in text; copied in Journal of Malacology vi. 

 1897, p. 15, fig. 1A. 



Based upon two specimens. 



"Compared with Azeca tridens this form may be immedi- 

 ately recognised by its elongate shape, which markedly con- 

 trasts with the almost exactly pupaeform shape of the typical 

 A. tridens. There are 9^ whorls instead of seven only, and 

 they also increase more slowly in size, the last whorl being 

 comparatively smaller than in Pulteney's species. The aper- 

 ture is more broadly expanded than in A. tridens, and not 

 nearly so compressed posteriorly, and its armature is strik- 

 ingly distinct, for while the denticle upon the outer lip is 

 stronger and the tooth at base of columella though of similar 

 size is different in character, there would seem to be a total 

 absence of the peculiar winding columellar lamella which is 

 so conspicuous a feature in A. tridens, and has been sup- 



