490 iMr. M. Connolly p7i 



wliicli extends nearly round to the coluniellar marg^in ; a 

 more deep-set fold ou the right of the base, corresponding 

 to a similar, but smaller, external furrow ; two small denticles 

 midway up the inner columcllar margin, which are dupli- 

 cated bv two similar, but quite separate, denticles deep 

 within tiie shell, high up on the columella, while above the 

 latter, commencing slightly nearer the surlace, is a narrow, 

 but prominent, iurunning fold on the left of the paries. 

 Callus so thick as to make the peristome continuous ; rima 

 long, narrow, atul shallow. 



Long. 15-4, lat. 5-8; apert., alt. 2*8, lat. 2*0; last whorl, 

 7'() mm. 



Hah. Uganda, near Fort Portal [Fisher). 

 'lype in Coll. Peile. 



It seems extraordinary that this fine species lias not been 

 discovered before in such a frequently explored neighbour- 

 hood, but I can find nothing very like it among species 

 hitherto described ; one of its most distinctive features is 

 the duplicated columcllar dentition. 1 have much pleasure 

 in dedicating it to its finder, whose researches promise to 

 furnish results of great value. 



Section Parennka, Pilsbry, 1919, 



rtychotrema (^Parennen) cedrorum, sp. n. 

 (Pi. XIV. fig. 13.) 



Shell minute, subovate^ rimate, thiti, siibasperate, some- 

 what bleached in the type, but normally probably olivaceous. 

 Spire produced, sides slightly convex, a[)ex rouiuled. Whorls 

 6, convex, gradually increasing, the first 2 smooth, remainder 

 sculptured with close, regular, well-defined, rather wavy, 

 vertical strife^ which are far fainter and slightly oblique 

 on the third whorl ; suture simple, deep. Aperture nearly 

 heart-sha[)ed ; peristome slightly expanded, M'hite, con- 

 tinuous; columella weak, rima deep; dentition consisting 

 of a deeply entering lamella on the right centre of the paries, 

 Mhich is sinuate at that point, and a prominent inrunuing 

 ridge-like fold in the centre, but not reaching the margin, 

 of the outer lip, corresponding to a deep external spiral 

 furrow extending halfway round the body-whorl. 



Long. 2'8, lat. lo ; last whorl 1"2 mm. 



Hub. Kenya, Cedar Forest, Uasin Gishu Plateau, 8500 ft. 

 {Mrs. Barber). 



Type in Albany Museum, Grahamstown. 



