FAUXULUS. 75 



9 mm. long, and F. layardi. It is named in honor of the late 

 Mr. H. C. Bumup, author of several excellent papers on South 

 African snails. 



Subgenus Anisoloma Ancey. 

 Fauxulus falconianus Pilsbry. PL 14, figs. 4, 4a. 



The shell has a small perforation and long rimation, is 

 ovate-conic, tapering from the last whorl, the spire attenuate 

 above, where the outlines are lightly concave ; base compressed 

 in its last half. The color is light cinnamon, paler at the 

 summit. The first two whorls are strongly convex and smooth ; 

 following whorls are nearly flat, with sculpture of delicate 

 oblique striae closely placed but much narrower than their 

 intervals and bending forward as they approach the suture 

 below. On the penult whorl the striae are coarser and more 

 strongly curved forward near the anterior suture. The last 

 whorl has less oblique riblets nearly as wide as their intervals. 

 The aperture is somewhat triangular, there being an impres- 

 sion or bay in the middle of the left margin, which projects in 

 a semicircle above it. The microscope shows a dense, irregular 

 papulation over the interior of the aperture as well as upon 

 the thin parietal callus covering the riblets above it. The 

 angular and parietal lamellge are about equal in height, the 

 former emerging to the outer lip near its insertion. Colum- 

 ellar and supracolumellar lamella about eciual, long, emerging 

 to the edge of the columellar lip. Infracolumellar lamella 

 represented by a small nodule (or in other specimens, absent). 

 Basal fold small, short, receding. Lower-palatal fold is sinu- 

 ous, emerges to the lip-edge and enters deeply. The upper- 

 palatal fold is long but much shorter than the lower, towards 

 which it converges inwardly. The suprapalatal fold is short 

 but in front view about as prominent as the upper-palatal 

 fold. 



Length 4.4 mm., diam. 2.6 mm. ; 9 whorls. Type. 



Length 4.5 mm., diam. 2.6 mm. Paratype. 



Natal : Zimbaba Bush, Krantzkop, collected by W. Falcon, 

 1923. Type No. 145477 ANSP., cotype in coll. Natal Museum. 



