124 GASTRQCOPTA, 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, 6. 



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 1/4, 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). PI. 22, figs. 11, 12. 

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

 rufous. Whorls 5y 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. li/o 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. 



