Land & Fresh-wattier Mollusca. 5 



deckeni [87]). West Africa ?: The Niger (Wellwitsch ace. to Mo- 

 re let [93]: var.) 1 . 



The var. lucida is consequently new for the White Nile. 

 Literature: 



a) The main species: Ampullaria ovata Olivier 90 (III, p. 39, II, p. 67> 

 Atlas II, p. 39, pi. 31, f. 1), 106 (p. 49, T. 14, f. 5), 67 (p. 187), 10 (p. 79, 

 pi. 10, f. 11), 71 (p. 1), 93 (p. 39, 40, 46), 50 (p. 19), 54 (p. 230), 13 (p. 32), 

 87 (p. 116); b) var. kordofana (Pahreyss): 1) Ampullaria ovata Olivier 16 (II, pi. 60, 

 f. 10, Texte IV, p. 264), 36 (p. 363), 117 (pi. 2, f. 25), 2 (p. 33), 115 (p. 25), 111 

 (vol. 10, spec 64). 2) Ampullaria kordofana Parreyss 106 (p. 44, T. 13, f. 1), 

 10 (p. 78, pi. 11, f. 12, 13), 93 (p. 40), 13 (p. 32). 3) Ampullaria ovata Olivier 

 v;u\ 67 (p. 187). 4) Ampullaria ovata Olivier var. v 71 (p. 2). 5) Ampullaria 

 ovata Olivier var. kordofana (Parreyss) 80 (p. 42); c) var. lucida Parreyss: 1) 

 Ampullaria lucida Parreyss 106 (p. 45, T. 13, f. 2, T. 14, f. 4), 10 (p. 80), 93 

 (p. 39), 13 (p. 32). 2) Ampullaria ovata Olivier var. 8 71 (p. 2); d) var. ray- 

 maud i (Bourguinat): 1) Ampullaria raymondi Bourguinat 10 (p. 76, pi. 9, f. 4), 

 93 (p. 39), 13 (p. 32). 2). Ampullaria ovata Olivier var. (3 71 (p. 1); c) var 

 Ueckeni v. Maktens 87 (p. 6); f) ? var. Morelet l 93 (p. 94, pi. 9, f. 10). 



6. Ampullaria wernei Philippe 



Alt. 88,8 mm. Lot. 87 mm. Length of the opening 76,5 

 mm., its breadth 45 mm. 



Hob. 1) Between Gebelain and Renk (White Nile). 2 full- 

 grown dead specimens with the epidermis w T ell preserved. 2) One 

 specimen from some place not mentioned on the White Nile. — 

 The specimens are distinguished by extraordinarily great breadth. 

 Geographical distribution: 



The White Nile (Flower [38], Werne ace. to Philippi [106], 

 Schweinfurth ace. to v. Martens [80]). Mar eb (North of Cassala) 

 (ace. to Jickeli [54]). Nuer land: Bahr-el-Zeraf (Marno ace. to 

 Jickeli [54], Flower [38]). Bahr-el-Ghazal (Schweinfuhrth ace. to 

 v. Martens [77], Flower [38]). Bahr-el-Djur (Schweinfurth ace. 

 to v. Martens [80]). Bahr-el-Djebel: Gondokoro (Calvert ace. to 

 Bourguinat [13]). Niam-Niam-Land (Schweinfurth ace. to von 

 Martens [80]). The Mountain Baginse (5° N. Lat.) (Schwelnfurth 

 ace. to v. Martens [80]). Nyanza (ace. to Bourguinat [13]). Mosam- 

 biquel: The Isle of Querimba (Peters ace. to v. Martens [67]). 



1 According to Bourguinat (13, p. 31) this is not A. ovata, but A. wel- 

 witschi Bourguinat. 



