:)00 Mr. M. Connolly on 



Gulella {PUcigulellu) perlala, s|). n. (PI. XIV. fig. 31.) 



Shell very small, roiuideil-ovale, riniate, thin, glossy, 

 translucent, milky olivaceous. Spire rather short, sides 

 slijllitly convex at the 4th whorl, apex bluntly rounded. 

 Whorls 5, rather flat, the 2 apical faintly microscopically 

 nialleate, remainder gradually increasing, sculptured with 

 tine, fairly close and regular, nearly straight, moderately 

 oblique transverse striae, almost obsolete on the front of the 

 body-whorl except in the suture, which is crenulate and 

 shallow, but well defined. Aperture irregular ; peristome 

 white, shining, reflexed; columella concave, rima pronounced; 

 dentition most complicated, consisting of a large, incurved, 

 somewhat oblique lamella at the junction of paries and 

 outer lip ; a sharp, well-defiuod, mid-parietal denticle ; a 

 large tooth, corresponding to a single deep external cavity, 

 arising just below the small sinus and occupying almost the 

 whole length of the outer lip, with 4 distinct cusps, 2 on 

 the upper slope opposite the parietal lamella and 2, less 

 ))romineut, at each extremity of the broad projection to 

 the left ; just below this, deeply inset, are 2 smaller denticles, 

 the left and lower of «hich occupies the centre of the base ; 

 on the left of the base and nearer the surface is a larger 

 denticle, and above this a deep-set, but prominent, three- 

 fold columellar plait. 



Long. 3'7, lat. 2*2 ; apert., alt. 1*2, lat. TO; last whorl 

 2'2 mm. 



Hub. Kexva, Kekumega (Percival). 



A l)eautiful little species, resembling G. ivoodhousei 

 (Preston) in dentition, but easily recognisable by its shorter 

 broader form. 



Section Molarklla, no v. 



As Pilsbry has created the section Pliciynlella for species 

 bearing a three-pronged fold on the columella, it may be 

 convenient to apply the name Molarella to the group in 

 which the principal columella process is twofold, usually 

 resembling a prominent, two-cusped, molar tooth, though in 

 individual specimens tlie cusps may not develop, and in 

 certain species tlie molar may be divided into the a])pearance 

 of two single teeth. 



Hie group is easily distinguishable, and contains the 

 following species examined by me : G. consanyuinea (type), 

 curvitumella and uyandensis (Smith), usambarica (Craven), 

 CO iosa, uptata, lima, funerea, and (jicendolina (Preston). 



