Freshwater-Shells from Central Africa. 147 



2. Trochonanina Jenynsi^ Pfr., var. 



Hob. Kirassa. 



The single specimen differs from the type in having the 

 umbilicus a little larger and the spiral sculpture rather 

 stronger. The keel at the periphery also is somewhat more 

 pronounced. 



3. Bidimus {Rhachis), sp. 

 Hab. Htoni Hiranza. 

 Two specimens in poor condition. 



4. BuUmus {Cerastus) ptychaxis, Smith, var. 

 Hob. Huala. 



The specimens from the above locality have the apical 

 whorls somewhat larger than the type from Ujiji. 



5. BuUmus [Cerastus) Emini^ sp. n. 

 Hab. Kidete ; also Htoni Heranza. 



6. BuUmus [Cerastus) kidetensis^ sp. n. 

 Hab. Kidete. 



7. BuUmus (Ena?) Ha?imngtom\ Sowerby. 

 Hab. Kidete, Huala, and Hkata. 



8. Achatinttj sp. 



Hab. Huini, Ussagara. 



The two specimens may perhaps be a variety of A. Craveni, 

 Smith ; they differ in the spire being somewhat longer and 

 the body-whorl shorter than in the type. 



9. Limicolaria Caillaudi^ Pfeiffer. 

 Hab. Hssanga, Ugogo ; near Huala River j Kirassa. 



10. Limicolaria^ sp. 



Hab. Lake Katue, near Albert Edward Lake. 

 Three specimens in bad condition may belong to L. recti- 

 strigata^ Smith. 



11. Stenogyra (SubuUna) usagarica, sp. n.^ 

 Hab. Kidete. 



