THE ANNALS 



AND 



MAGAZINE OF NATURAL HISTORY. 



[SIXTH SERIES.] 

 No. 56. AUGUST 1892. 



XT I. — On the Shells of the Victoria Nyanza or Lake 

 Oukirewe. By EdgAU A. SxMITH. 



[Plate XII. figs. 3-6, 8-16.] 



The first record of any shells from this great African lake 

 appeared in the ' Proceedings of the Zoological Society ' for 

 1864. In a list ot the shells collected by Capt. Speke during 

 his second journey through Central Africa Dr. H. Dohrn 

 quoted the following from the lake, viz. : — I. Linincea^ sp. ; 

 2. Planorbis, sp. ; 3. Lanistes BoUenianus ; 4. Paludina 

 ^=Viviparus] unicolor^ 5. Paludina \^= Cleopatra] buli- 

 moides. 



This collection was presented to the British Museum by 

 Capt. Speke ; but the localities attached to the above speci- 

 mens make it very doubtful if any of them really were 

 obtained from the Victoria Nyanza. Dohrn himself {L c. 

 p. 116) observes that " the specimens from different localities 

 have been partly mixed up." 



With the exception of the Lanistes^ which are marked 

 " from the Kanagwa and Uzandu district," the rest were 

 transmitted to the Museum with the locality " Nile district, 

 between 3° and 14° N. lat." The " gigantic specimen from 

 the lake, more than twice as long as usual," of Paludina 

 bulimoides is labelled " Usaramo, E. Africa, Plateau, 6° S. 

 Ann. & Mag. N. Hist. Ser. 6. Vol. x. 9 



