Land- & Fresh-water Molluscs. 7 



nit/us Montfort 131 a (p. 214). 11) Lanistes carinatus (Oliviek) 103 (1866, p. 

 188), 54 (p. 227), 84 (p. 105), 113 (p. 203), 87 (p. 116), 38 (p. 970). 12) Mela- 

 mpmits boltenianus (Chemnitz) 13 (p. 41). 



8. Hydrobia schweinfurthi Jiokeli. 



Alt. 2,7 mm. Lat. 1,9 mm. 



Hab. Gebel Ahmed Agha (The White Nile). On water-plants 

 in back-water. 



Geographical distribution: 

 The White Nile (Schweinfurth ace. to v. Martens [80]). 



Literature: 



Hydrobia schweinfurthi Jickeli 80 (p. 43), 54 (p. 250, T. VII, f. 35). 



9. Melania tuberculata (Muller). 



Alt. 18 mm. Lat. 6 mm. 



Hab. Mahmudia (The White Nile). In mud on the depth 

 of 1 metre. One living specimen. 



Geographical distribution: 

 Lower Egypt (Olivier [99], Dietrich ace. to Jickeli [54], R. 

 Hartmann ace. to Jickeli [54], Ehrenberg and Hemprich [32], 

 Jickeli [54], Stuhlmann ace. to v. Martens [87]). The Nile (Eoth 

 [16]). The desert of Cosseir (Fraas ace. to Jickeli [54]). The 

 Upper Nile (Klot-Bey ace. to v. Martens [70]). Nubia (Caillaud 

 [16]). The White Nile (Lepsius ace. to Jickeli [54], Werne ace. 

 to v. Martens [70], Schweinfurth ace. to v. Martens [80]). Harasa 

 (between Atbara and Bahr-Salam) only shells (Piroth ace. to 

 Jickeli [55]). Countries northeast of Abyssinia (Blanford [7 a]), 

 Schiller ace. to v. Martens [74], Beccari ace. to Morelet [94]). 

 Abyssinia (Ruppell ace. to v. Martens [70], Jickeli [54]). Somali 

 Land (Koettlitz ace. to R. Standen [44]). Solcotra (ace. to J. 

 C. Melville [88]). Victoria Nyanza (Speke ace. to Dohrn [28], 

 Emin Effendi ace. to v. Martens [84]). Central Africa (Baker 

 ace. to Adams [1]). Ehadamus (ace. to Jickeli [54]). Tripolis 

 (ace. to Jickeli [54]). Tunis (Bourguinat [12]). Algeria (ace. to 

 Bourguinat [11]). Turgutta (Rholfs ace. to Jickeli [54]). Ma- 

 rocJco (ace. to Jickeli [54]). Cape Verde Islands (Dohrn [30]). 

 Guinea (Schroter ace. to Jickeli [54]). Mosambique: Tette and 

 Querimba Islands (Peters ace. to v. Martens [68]). Ngami (ace. 



