GLESSULA, EAST AFRICA. 105 



brown ; 5y 2 to 6 whorls, the first nearly globular, smooth, the 

 second distinctly striate, the rest regularly widening, some- 

 what convex, with rather impressed and weakly crenate su- 

 ture; the penult, whorl relatively high, the last whorl lower, 

 elliptical, strongly descending to the aperture, with a few 

 darker growth-arrest streaks, rounded below. Aperture 

 moderately oblique, lanceolate, the outer lip weakly bordered 

 outside, moderately arcuate above and below, in the middle 

 straighter ; basal margin rounded ; columellar margin strongly 

 arcuate, appressed, white, obliquely truncate below, passing 

 with a distinct callus deposit upon the parietal wall. 

 (Martens). 



Length 23.5, diam. 9, aperture 10 x 5 mm. 



Length 14, diam. 6, aperture 7x3 mm. 



East Africa: Runssoro at 3100 meters (Stuhlmann, camp 

 III, June 12, '91). 



Glessula runssorina MARTS., Nachrbl. D. M. Ges. vol. 27, 

 December, 1895, p. 184, Deutsch-Ost-Afrika, Beschalte 

 Weichthiere, p. 114, pi. 5, f. 11, 12, 1898. 



"External soft parts black; foot long and narrow behind, 

 flattened above, paler, with two longitudinal furrows, oblique 

 furrows passing outward and backward from them. Sole 

 whitish in the middle, blackish at the edge, but without 

 sharply defined limits." (Martens). 



85. G. FERUSSACIOIDES Pollonera. 



Shell subcylindric-oblong-ovate, clear, pale corneous yellow- 

 ish, delicately striate. Spire attenuate, the apex obtuse; 

 whorls 7 a little convex, separated by a slightly impressed 

 and narrowly margined suture. Aperture oblong-lunate, 

 acute above; lip simple, thin; columellar margin rather 

 straight, obliquely truncate. Length 18.5, diam. 6.5, aperture 

 7x3.5 mm. (Poll). 



East Africa: Eastern slope of Ruwenzori, Valle Mobuku 

 at 2000 meters elevation (Duke of Abruzzi). 



Glessula f., POLLONERA, Bolletino Mus. Zool. etc., Torino, 

 rxii, no. 361, p. 3, July, 1907. 



