1879. Cyrena (Corbicula) radiata Parr., von Martens, Sitz. Ber. d. 



Ges. Naturf. Freunde, p. 105, p. 743. 

 1879. Corbicula — — Clessin, Die Familie der Cycladeen, in 



Conch. Cab., 2 e édit., p. 162, pi. 28, 



fig. 16 18. 

 1881. Cyrena (Corbicula) — — E. A. Smith, On Sh. fr. Lake Tan- 



ganyika a. Nyassa, in Proc. Zool Soc. 



of Lond., P. 295. 



1888. Corbicula — — E. A. Smith, On Sh. fr. Ihe Albert 



Nyanza, in Proc. Zool. Soc. of Lond., 

 p. 55. 



1889. — nyassana Bourgcignat, Mélanidés Lac Nyassa, 



etc., in Bull. Soc. Malac. France, p. 37. 



1890. — radiata Parr. E. A. Smith, Sh. fr. Victoria Nyanza, 



in Ann. a. Mag. of Nat. Hist., 6" Ser., 



VI, p. 149. 

 1892. — — — E. A. Smith, Sh. fr. Victoria Nyanza, 



in Ann. a. Mag. of Nat. Hist., 6"" Ser., 



X, p. 126. 

 1894. — — — Sturany, in Baumann, Durch Massai- 



land zur Nilquelle, p. 11. 

 1894. — pusilla Sturany, in Baumann, Durch Massai- 



land zur Nilquelle, p. 10. 

 1897. — radiata Parr., von Martens, Besch. Weichth. Deutsch- 



Ost Afrikas, p. 259. 

 1906. — — — Germain, Moll. Lac Victoria Nyanza, in 



Bull. Mus. Hist. Nat., p. 307. 



Ile Lusinga, drag. 4 à 5 m. Ch. Alluaud, 1904. 



Genre PSEUDOCORBICULA nov. gen. 



PSEUDOCORBICULA AlLUAUDI IlOV. Sp. 

 (PI. II, fig. 8, 9, 10) 



Testa solidula, subdiaphana, nitida, concentrice tenuiter 

 multistriata, ovato-trigona, umbones versus tumida. Margo 

 dorsalis utrinque declivis, margo ventralis rectiusculus. Lunula 

 lanceolata, paululum impressa ac circumscripta ; vulva parum 

 dislincta, elongata. Apices prominuli, plerumque erosi. Liga- 

 mentum comeum, brève ac prominens. Pagina interna levis, 

 margine integro. Cardo in xakula dextra deniiculum cardi- 



