Manchester Memoirs, Vol. It. (1907), No. 4. J 



form, of which unnamed examples from Nyasa exist in 

 the British Museum (Nat. Hist.), the name of its discoverer, 

 Mr. Sheffield A. Neave. 



Lanistes ovum Peters. 



Lanistes ovum, Peters ; Troschel, Archiv f. Naturgesch., Jahrg. 

 n, vol. 1, p. 215, pi. 6, fig. 11, 1845. 



Hab. Banks of a small stream at Ndola, at 4,000 

 feet alt. 



Two Jiving examples with opercula. Both seem 

 juvenile, and we are not quite sure of the identification. 

 The species undoubtedly would occur in Rhodesia, being 

 widely distributed, and reported also from Delagoa Bay, 

 to Tanganyika and Nyasa. 



Fam. MELANIID/E. 

 Melania tuberculata O. F. Miiller. 



Nerita hiberadata, O. F. Miiller, " Hist. Verm.," vol. 2, p. 191, 



1774. 

 Melanoides fasciolata, Olivier, " Voy, Emp. Ottoman," vol. 2, 



p. 40, pi. 31, fig. 7. 

 Melania tuberculata (Miill.); Philippi, " Abbild. neuer Conch.," 



vol. 1, pi. 1, fig. 19. 

 Hab. Bed of Mterize River, a tributary of the 

 Loangwa. May 23, 1905. 



One of the most widely distributed of all tropical or 

 subtropical mollusca. The original types came from the 

 Coromandel Coast. It is reported as far south as the 

 Transvaal, and will very probably be found in Natal. 



Fam. LIMNAEID.E. 

 Planorbis bowkeri Melvill and Ponsonby. 

 Planorbis Bowkeri, Melvill and Ponsonby, Ann. Mag. Nat. Hist., 

 (6), vol. 12, p. in, fig. 19, 1893. 



