. 
1927] Pilsbry-Bequaert, The Aquatic Mollusks of the Belgian Congo 109 
Lymnxa (Radix) caillaudi var. azaouadensis (Germain) =Limnea africana var. 
- azaouadensis GERMAIN, 1909, Bull. Mus. Hist. nee Paris, p. 372. Azaouad, French 
Sudan (subfossil). 
Lymnxa (Radix) caillaudi var. guidimouniensis (Germain) = Limnexa africana 
var. guidimountensis GERMAIN, 1916, ‘Doc. Scientif. Miss. Tilho,’ III, p. 294. 
Guidimuni, near Lake Chad. 
Lymnxa (Radix) caillaudi var. courtetti (Germain) =Limnxa undussumex var. 
courtett GERMAIN, 1904, Bull. Mus. Hist. Nat. Paris, p. 467; 1908, in A. Chevalier, 
‘L’ Afrique Centrale Frangaise,’ p. 492, Pl. v, fig. 2. Mamun country, French Terri- 
tory of Lake Chad. 
Lymnexa (Radix) caillaudi var. jouberti (Bourguignat). See p. 114. 
Lymnxa (Radix) caillaudi var. kambaensis (Germain) =Limneza african avar. 
kambaensis GERMAIN, 1911, ‘Doc. Scientif. Miss. Tilho,’ II, p. 176, Pl. 1, figs. 11-12. 
Hight kilometers east of Kamba, in Lake Chad. 
Lymnxa (Radix) caillaudi var. kouloaensis (Germain) =Limnexa africana var. 
kouloaensis GERMAIN, 1911, ‘Doc. Scientif. Miss. Tilho,’ Ul, p. 177, Pl. 1, figs. 13- 14. 
North of Kuloa, in Lake Chad. 
Lymnxa (Radix) catllaudt var. minor (Germain) = Limnza africana var. minor 
GERMAIN, 1911, ‘Doc. Scientif. Miss. Tilho,’ II, p. 177, Pl. 1. fig. 15, Kelekorarom in 
Lake Chad. 
Lymnxa (Radix) caillaudi var. raffrayi (Bourguignat) = Limnza raffrayi Bour- 
GUIGNAT, 1883, Ann. Sc. Nat. Zool., (6) XV, p. 93, Pl. x, figs. 97-98. Limnea 
- &thiopica BOURGUIGNAT, 1883, op. cit., p. 94, Pl. x, figs. 92-93. Limnea africana var. 
raffrayt GERMAIN, 1919, Bull. Mus. Nat. Hist. Paris, p. 186. Anseba valley, Abyssinia. 
Lymnexa (Radix) chudeaui (Germain) = Limneza chudeaut GERMAIN, 1907, Bull. 
Mus. Hist. Nat. Paris, -p. 272, fig. 21. Lake Chad at Kuloa. 
Lymnzxa (Radix) dakaénsis (Sturany) = Limnzus dakaénsis SruRANY, 1898, Anz. 
Ak. Wiss. Wien, Math. Naturw. Kl., X XX, p. 160; 1898, Denkschr. Math. Naturw. 
Kl. Ak. Wiss. Wien, LXVII, p. 610, Pl. 111, figs. 55-56. Daka, Rhodesia. 
Lymnxa (Radix) damarana (O. Beettger) =Limnzxa damarana O. BarTTcErR, 
1910, Abh. Senckenberg. Naturf..Ges., XXXII, p. 450, Pl. xxvirr, figs. 16a-b. 
Gobabis, Damaraland (subfossil). 
is Lymnza (Radix) elmeteitensis (EK. A. Smith) = Limnza elmeteitensis EK. A. SM1TH, 
1894, Proc. Malacol. Soc. London, I, p. 167, fig. 5 (on p. 166). Lakes Elmenteita and 
Baringo, Kenya Colony. J. Ture, 1911, ‘Wiss. Ergebn. D. Z. Afr. Exp. (1907- 
1908),’ III, p. 208, records this species with some doubt from Lake Luhondo in 
Ruanda (Schubotz Coll.). 
Lymnzxa (Radix) gravieri (Bourguignat). See p. 114. 
Lymnzxa (Radix) kempi (Preston) =Limnxa kempi Preston, 1912, Proc. Zodl. 
Soc. London, p. 190, Pl. xxx11, fig. 1. Kisumu, Lake Victoria. 
Lymnea (Radix) natalensis (Krauss). See p. 110. 
Lymnea (Radix) natalensis exserta (E. v. Martens). Seep. 112. 
Lymnxa (Radix) natalensis var. humerosa (E. v. Martens) =Limnxa humerosa 
E. v. Martens, 1897, ‘Deutsch. Ost Afr., IV, Beschalte Weichth.,’ p. 135, Pl. v1, 
fig. 1. Described from Mengo, Uganda; Itole, Lake Victoria; Umbugwe; Irangi; 
and Bubu River near Irangi (south of Lake Manyara). 
Lymnzxa (Radix) natalensis var. perriert (Bourguignat)=Limnza perriert 
Boureurenat, 1881, ‘Moll. Terr. Fluv. Pays Gomalis,’ p. 11; 1882, ‘Moll. Terr. 
