SPECIES OF ZONITIDE FROM EQUATORIAL AFRICA, 797 
ELGONELLA ANGUSTIOR, sp. n. (PI. IT. figs. 6a, 66.) 
Shell allied to H. favidula Preston, but of a pale brown colour 
and more narrowly turbinate, with subangulate last whorl; the 
umbilicus is narrower, the aperture is higher and narrower, and 
the margins of the labrum are convergent. 
Alt, 4°5, diam. maj. 7°25, diam. min. 7 mm, 
Aperture: alt, 3, diam. 3 mm, 
Hab. Mount Elgon, 8.W. Uganda. (C. W. Woodhouse.) 
ELGONELLA onIBATES, sp. n. (PI. II. figs 8a, 8b.) 
Shell small, turbinate, light reddish brown, smooth, slightly 
polished ; whorls 43, regularly increasing, marked with oblique 
growth-lines; suture impressed; umbilicus very narrow, deep; 
columella rather broadly outwardly expanded, descending in a 
rather gentle curve ; labrum simple; aperture roundly ovate. 
Alt. 4°25, diam. maj. 5:75, diam. min. 5 mm. 
Aperture: alt. 3, diam. 3 mm. 
Hab. Mount Elgon, Uganda. (C. W. Woodhouse.) 
ELGONELLA ROBINI, sp.n. (Pl. I. figs. 10a, 10 6.) 
Shell perforate, turbinate, light brown, smooth, but for oblique 
growth-ridges ; whorls 43, regularly increasing, the last subangu- 
Jate at the periphery; suture impressed; umbilicus moderately 
narrow, deep; columella slightly excavated above, somewhat 
vertically descending below; labrum simple; aperture very 
compressedly, broadly sublunate. 
Alt. 4, diam. maj. 6°25, diam. min. 5°75 mm. 
Aperture ; alt. 2°75, diam. 2°5 mm. 
Hab. Rumruti, British East Africa. (Robin Kemp.) 
ELGONELLA SOBRINA, Sp.n. (PI. IT. figs. 12a, 126.) 
Shell differing from #. robini Preston in its smaller and pro- 
portionately much more depressed form and in its rounded last 
whorl; it has half a whorl less and the growth-ridges are much 
more marked and the umbilicus is narrower; the columella and 
the aperture are somewhat more oblique and the latter is pro- 
portionately broader. 
Alt. 3°5, diam. maj. 5°75, diam. min. 5 mm. 
Aperture: alt. 2°25, diam. 2°5 mm. 
Hab. Rumruti, British Kast Africa. (Robin Kemp.) 
BURUNGAELLA, gen. nov. 
Shell thin, corneous, whorls rather tightly coiled, the last 
proportionately large, more or less obsoletely, transversely plicate ; 
aperture somewhat large. 
Genotype: &. oscitans Preston. 
BURUNGAELLA OSCITANS, sp. n. (PI. I. figs. 17a, 176, 17.) 
Shell perforate, very thin, almost membranaceous, very de- 
pressedly turbinate above, convex below, pale brownish straw- 
