14 MELVILL & STANDEN, Molluscafrom N.E.Rhodesia. 



A ivensii Furtado*, of which one specimen, probably in 

 the Congo Free State, was collected by the same 

 explorers, is, from the figure, of the same character as our 

 var. (b) lanceolata. 



Class PELECYPODA. 



Fam. UNIONID/E. 



Mutela bourguignati Ancey. 



Mutela bourguignati, Ancey, " Esp. nouv. et genr. nouv. 

 d'Oukerewe et Tanganyika," p. 8, 1885. 



Hab. Bed of Mterize River, a tributary of the 

 Loangwa, May 23, 1905. 



Described as inhabiting the Victoria Nyanza. 



Fam. Cyrenid^e. 



Corbicula astartina Mrts. 



Corbicnla astartina, v. Martens, Mai. Bldtt., vol. 6, p. 219, 

 pi. 3, figs. 6, 7, i860. 



Hab. Mterize River, a tributary of the Loangwa, 

 May 23, 1905. 



Dead half valves, but quite characteristic. The species 

 was described by Dr. E. von Martens from examples from 

 Nyasa (J. Kirk) and also Zambesi (Peters). 



Corbicula radiata Phil. 

 Cyrena radiata, Philippi, "Abb. und Beschr. neuer Conch.," 



vol. 2, p. 78, pi. i, fig. 8, 1846. 

 -Corbicula radiata (Phil.), H. Adams, Proc. Zool. Soc. Lond., 

 1866, p. 376. 

 Hab. With the preceding. 



Two valves, smaller than those of C. astartina Mrts., 

 probably belong to this widely distributed and common 

 Corbicula, reported from the neighbourhood of all the large 

 African lakes by various collectors from time to time. 



*Joum. de Conch., p. 145, pi. 6, f, 2, 1886. 



