124 GASTROCOPTA, AFRICA. 



Upper Senegal: Medine, under a stone (Em. Dorr). 



Pupa microbus A. Morelet MS., DAUTZENBERG, Mem. Soc. 

 Zool. de France, 1890, p. 129, pi. 1, f. 5a-, b. 



It is placed in Gastrocopta with some doubt, as nothing is 

 said of a bifid parietal tooth. 



70. GASTROCOPTA ANNOBONENSIS (Girard). 



Shell small, oval, elongate, having a narrow umbilical 

 chink; corneous, subtransparent, marked with fine and reg- 

 ular striae. Whorls 5, quite convex, with a well-marked, deep 

 suture. Last whorl slowly ascending near the aperture, about 

 one-third the total length, a little compressed into an obtuse 

 carina at the base. Aperture subvertical, somewhat rounded, 

 obstructed by teeth and folds. Peristome thick, well reflected, 

 the margins united by a strong callous which makes them 

 seem nearly continuous. Columellar margin straight, armed 

 with one fold ; parietal wall having a quite sinuous, more de- 

 veloped fold ; outer margin quite sinuous, having 3 or 4 teeth 

 or dentiform folds quite deep within. Length 2*4, diam. 1 

 mm. (Girard). 



Island of Anno-Bom (F. Newton). 



Pupa Anno-Bonensis GIRARD, Journal de Sciencias Math., 

 Phys. e Naturaes, Ac. Real Sci. Lisboa, Ser. 2, iii, Feb. 1894, 

 p. 207. 



71. GASTROCOPTA FLOCCULUS (Morelet). PL 22, figs. 11, 12. 

 Shell rimate, ovate, smooth, somewhat shining, corneous- 

 rufous. Whorls 5!/2, convex, joined by an impressed suture, 

 the last a little more than one-third the length. Aperture 

 ovate-circular, 4-toothed: one compressed, entering tooth on 

 the parietal wall, near the insertion; one on the columella, 

 the rest in the outer margin, the upper one smaller. Peri- 

 stome simple, thin, a little expanded throughout. Length 3, 

 diam. iy 2 mm. 



West Africa: shore of the lake of Quilunda, district of 

 Icolo and Bengo, Angola, on the leaves of Pistia stratioides. 



Pupa flocculus MORELET, Voyage du Dr. Friederich Wel- 

 witsch dans les royaumes d' Angola et de Benguella, Mol- 

 lusques, 1868, p. 81, pi. 3, f. 4. 



