792 MR. H. B. PRESTON ON NEW GENERA AND 
narrowly margined below ; umbilicus narrow, partly overhung by 
the outward expansion of the upper portion of the columella ; 
columella margin outwardly expanded and slightly curved above, 
not outwardly expanded and very obliquely descending below ; 
labrum simple; aperture broadly, obliquely sublunate. 
Alt. 3°75, diam. maj. 6°5, diam. min. 6 mm. 
Aperture: alt, 2°75, diam. 3 (nearly) mm. 
Hab. Mount Elgon, Uganda. (C. W. Woodhouse.) 
GUDELLA GERSTENBRANDTI, sp. n. (PI. ITI. fig. 7.) 
Shell differing from G. elgonensis Preston in its smaller size 
and more compressed last whorl, darker colour, and more curved 
columella ; the aperture also is proportionately not so broad and 
is less oblique. 
Alt. 3°5 (nearly), diam. maj. 5°75, diam. min. 5 mm. 
Aperture: alt. 2°5, diam. 2°5 mm. 
Hab. Mount Elgon, Uganda. (C. W. Woodhouse.) 
GUDEELLA WooDHouSsEI, sp. n. (PI. III. fig. 13.) 
Shell allied to G. elgonensis Preston, but larger, with more 
obtuse apex and more convex whorls, the columella is much more 
vertically descending and the aperture is proportionately higher 
than in that species. 
Alf. 5, diam. maj. 7°25, diam. min, 6°5 mm. 
Aperture: alt. 3, diam. 3 mm. 
Hab. Mount Elgon, Uganda. (C. W. Woodhouse.) 
GUDEHLLA INCLINANS, sp. n. (PI. III. figs. 1 & 8.) 
Shell depressed with sloping sides, thin, reddish brown becoming 
paler on the base towards the umbilical area; whorls 4, rather 
rapidly increasing, having a somewhat drooping appearance, the 
last very slightly descending i in front, marked with radiate growth- 
plicee which are more noticeable in the subsutural region and 
sculptured throughout with fine, wavy, spiral strie ; suture im- 
pressed, margined below ; umbilicus narrow, partly concealed by 
the outward expansion of the columella; columella margin out- 
wardly expanded and descending in a gentle curve above, oblique 
below ; labrum simple, acute, projecting in front, slightly receding 
above, greatly receding below; aperture broadly and somewhat 
obliquely sublunate. 
Alt. 3°75 (nearly), diam. maj. 7, diam. min. 6 mm. 
Aperture: alt. 3°25, diam. 3 mm. 
Hab. Burunga, Mount Mikeno, Belgian Congo, at an altitude 
of 6000 feet. (Robin Kemp.) 
GUDEELLA INFLATA, sp. n. (PI. IIT. fig. 21.) 
Shell differing from G. inclinans Preston in its larger size, 
much more inflated form, and darker colour which is uniform 
throughout, much finer spiral sculpture and more narrow um- 
bilicus, more vertically descending columella and ovate aperture, 
