SMITH : E. AFEICAN NON-MAKINE MOLLUSCA. 167 



The shell figured by Reeve as " C Zanzilaricum, Petit" (Con. Icon, 

 pi. xiv. f. 87), which is still preserved in Cuming's collection, is a 

 young specimen of a larger species, probably from Madagascar. This 

 is evident from the large size of the nuclear whorls. 



14. Melania tubekculata (Miiller). 

 Hah. — Kibwezi. 



15. Ampullaria speciosa, Philippi. 



Mab. — Lake Dumi, Tana ; Ngalana, AVitu. 

 A common well-known East African form. 



16. Lanistes caeinatus (Olivier). 



Hal. — Witu, swamps of the Kilifi River, and Sabaki Valley, east 

 and west of Makangeni. 



This Nilotic species ranges from Egypt to the Victoria Nyanza. It 

 has also been recorded from Abyssinia (Philippi) and tlie Tana River 

 (Martens). 



17. Lanistes, sp. 



Hab. — Salt marshes of the Ozi River, Kau. 



A single specimen from this locality does not agree exactly with 

 any of the numerous known forms. It is of a dark olive-brown 

 colour and looks like a cross between L. ovum and Z. olivaceus. It 

 seems advisable to await further specimens in order to see if the 

 peculiarities of the present example are maintained in others. 



18. Cleopatra eerruginea (Lea). 



Hab. — Swamps of the Kilifi River (Gregory) ; Zanzibar, TJmba, etc. 

 The Paludomiis Africana, Martens, from Finboni appears to be 

 identical with this species. 



19. LiMN^A Elmeteitensis, n.sp. Pig. 5. 



Testa ovata, superne acuminata, tenuis, cornea, incrementi lineis 

 striata, malleata, striis spiralibus nonnullis sculpta ; spira acuta ; 

 anfractus 5, celeriter crescentes, sutura obliqua sejuncti, convexiusculi, 

 ultimus magnus ; apertura inverse auriformis, longit. totius |- paulo 

 superans ; columella leviter incrassata, reflexa, rimam angustam um- 

 bilicalem formans, oblique contorta ; labrum tenuissimum, in medio 

 prominens, arcuatum. Longit. 23, diam. maj. 13 mm. Apertura 16 

 longa, 9 mm. lata. 



JIab. — Lake Elmeteita and Lake Baringo. 



This species appears to be distinguishable from all the other African 

 forms It belongs to M. Bourguignat's group stagnaliana, which 

 includes those species that approximate the common L. stagnalis of 

 Europe in general appearance. In young and half-grown specimens 

 very little malleation is observable, and it is only upon the body- 

 whorl of mature shells that this feature is strongly marked. 



20. Physa, sp. 



Hab. — Lake Elmeteita. 



Only a single dead specimen was obtained. 



21. Mutela Petersi, Martens? 



Hab. — Lake Dumi, Tana River, and swamp east of Makangeni, 

 Sabaki Valley. 



The few specimens from the above localities possibly belong to this 



