182 Bulletin American Museum of Natural History [Vol. LITI 
Ampullaria ovata var. bridouci Bourguignat. GERMAIN, 1911, Bull. Mus. Hist. 
Nat. Paris, p. 439. 
Pachylabra bridouxi Bourguignat. Koserxt, 1912, in Martini and Chemnitz, 
‘Syst. Conch. Cab., n. F., 1, Ampullariide,’ p. 50, Pl. xxx1, fig. 4. 
Lake Tanganyika at the mouth of the Malagarazi River and near the outlet of 
the Lukuga, below the Chakabala Islands (type locality not designated). 
This is evidently a large variety of P. ovata. 
Pila ovata var. emini (E. v. Martens) 
Ampullaria ovata var. emini E. v. Martens, 1897, ‘Deutsch Ost Afr., IV, Be- 
schalte Weichth.,’ p. 160, fig. (type locality: Nyemirembe on Lake Victoria). 
GerMaIn, 1916, Bull. Mus. Hist. Nat. Paris, p. 202. . 
Pachylabra ovata var. emini E. v. Martens. Kosstrt, 1912, in Martini and 
Chemnitz, ‘Syst. Conch. Cab., n. F., I, Ampullariide,’ p. 52, Pl. xxxu, fig. 2. 
Lake Edward: near Rumande (Stuhlmann Coll.). 
We have seen a young specimen from Kabare, Lake Edward (J. Bequaert Coll.), 
which evidently belongs to a form of P. ovata. 
The following forms have been regarded by certain authors as synonyms or 
variations of P. ovata. We mention them here to complete our list of described forms. 
from continental Africa. | 
Ampullaria bourguignati BrtLoTtTe, 1885, Bull. Soc. Malacol. France, II, p. 107, 
Pl. vi, fig. 3. Lake Ballat, Lower Egypt. 
Ampullaria dumesniliana Bituorrs, 1885, Bull. Soc. Malacol. France, I, p. 
104, Pl. vi, fig. 2. Webi-Doboi, near Merca, Somaliland. 
Ampullaria lucida, Puri, 1851, in Martini and Chemnitz, ‘Syst. Conch. Cab.,’ 
EE 20, p- 45, ‘Pl. xii, fie. Zand Fi. xiv, ag. 4 Key pt. 
; Ampullaria raymondi Boureutenat, 1863, ‘Moll. Nouv.,’ I, 3° décade, p. 76, 
Pl. 1x, fig. 4. Lake Ballat, Lower Egypt. : 
Ampullaria ovata var. deckeni EK. v. Martens, 1897, ‘Deutsch Ost Afr., IV, 
Beschalte Weichth.,’ p. 159. Zanzibar. We are inclined to accept this as a good race. 
Ampullaria ovata var. lamellosa GprMaIN, 1912, Bull. Mus. Hist. Nat. Paris, p. 
323, fig. 61 (on p. 324). River Niger. This appears to be a distinct species; the 
shave is not like that of Pila ovata. 
Pila stuhlmanni (EK. v. Martens) 
Ampullaria erythrostoma var. stuhlmanni E. v. Martens, 1897, ‘Deutsch Ost 
Afr., IV, Beschalte Weichth.,’ p. 155, fig. J. Tarmte. 1911, ‘Wiss. Ergebn. D. Z. Afr. 
Exp. (1907-08),’ III, p. 210. Germatn, 1916, Bull. Mus. Hist. Nat. Paris, p. 201. 
Pachylabra erythrostoma var. stuhlmanni E. v. Martens. Kopetr, 1912, in 
Martini and Chemnitz, ‘Syst. Conch. Cab., n. F., I, Ampullaride,’ p. 54, Pl. xxx1, 
hes cl ' 
Lake Albert: near Kassenje (type locality; Stuhlmann Coll.; Schubotz 
Coll.). Lake Edward (?): Katarenge (one doubtful specimen, Stuhlmann Coll.; 
Germain merely copies v. Martens’ record, making the identification definite, without, 
however, giving his reasons for doing so). ‘ 
Ampullaria erythrostoma Rrmve, 1856, ‘Conchol. Iconica,’ X, Ampullaria, Pl. 
Xin, fig. 59, was described as from ‘Zanzibar. According to Sowerby (1909, Proc. 
~ Malacol. Soc. London, VIII, p. 363), this was, however, an erroneous locality, since 
