ON AFRODONTA MELV. AND PONS. 341 



Endodonta [Endodonta (Afrodonta)] novemlamel- 

 laris n. sp. PL XXIV, figs. 11-13. 



Shell minute, depressed conic-oval, with convex spire 

 slightly raised, deeply and moderately widely umbilicate, 

 horn-colour, thin, translucent, silky ; whorls 4^, narrow, 

 convex, the last rounded at the periphery, deeply impressed 

 at the sutures, very closely microscopically striate except the 

 first, which is smooth ; aperture nearly erect, crescentic, with 

 thin peristome, slightly thickened towards the columella, 

 and furnished with the following internal, short, in-running, 

 whitish lamellas or folds : (a) One near the base of the 

 columella, strong, thick, tooth-like, pointed above; (b) six on 

 the outer wall about eqviidistant from each other, the first, 

 above the periphery, very small, the second and longest 

 (about 0"15 mm. long) about the periphery, and four below 

 gradually getting smaller and nearer the peristome ; (c) two 

 on the parietal wall, in form and position like those of f ar- 

 quhari. 



Height 078, width 1-22 mm. 



Hab.^ — -Grahamstown (J. Farquhar); also Kowie (Farquhar), 

 and Kingwilliamstown (Grodfrey, per Connolly), all in the Cape 

 Province. 



The smallest species of the group yet examined, this has a 

 relative height in excess of that of farquhari, an effect 

 produced, not by an increased height of the spire, but by the 

 greater depth of the last whorl. The difference is, however, 

 not so great as would appear from the given dimensions, 

 which are taken from the figures, not from the shells them- 

 selves. Thus, the figure of the present species (fig. 11) shows 

 a little more of the base than that of farquhari (fig. 8), so, 

 while shortening the spire in perspective, the whole height is 

 slightly exaggerated. 



It would appear from some young specimens supplied to me 

 by Mr. Farquhar that the folds are developed at a very early 

 age, and that the mollusc, as it advances towards maturity. 



