PLATE 29 



Figs. la, b. Globularia phasianelloides (d'Orbigny). Upper Oxfordian, Seir Limestones. 

 Dusse, i£ miles S.E. of Rahmu, N.E. Kenya. G. 76397 : a, apertural view ; b, abaper- 

 tural view, both x 1 ........... p. 166 



Figs. ia, b, c. Ampullospira quennelli sp. nov. Callovian. Nchia stream, 2 miles 

 W.N.W. of Mandawa, Tanganyika. Paratype, GG. 10325 : a, apertural view ; b, abaper- 

 tural view ; c, apical view, showing sutural channel, all x 1 . . . .p. 165 



Figs. 3a, b, c. Same species. Kimmeridgian. Just W. of Mabokweni, 4 miles N.W. 

 of Tanga, Tanganyika. Holotype, G. 91998 : a, apertural view ; b, abapertural view ; 

 c, apical view, all x 1 . . . . . . . . . .p. 165 



Figs. \a, b, c. Acteonina (Striactaeonina) supraliasica sp. nov. Upper Lias, Toarcian. 

 Didimtu hill, 2 miles S. of Bur Mayo, N.E. Kenya. Holotype, GG.10271 : a, x 1 ; 

 b, apertural view, x 2 ; c, abapertural view, x 2 . . . . . . p. 173 



Figs. 5a, b. Akera tanganyicensis sp. nov. Callovian. 1 mile N.W. of Mbinga, 

 Tanganyika. Holotype, GG. 10332 : a, apertural view ; b, abapertural view, both x 1 p. 174 



Figs. 6a, b. Promathildia aff. opalini (Quenstedt). Upper Lias, Toarcian. Didimtu 

 hill, 2 miles S. of Bur Mayo, N.E. Kenya. GG. 10270 : a, x 1 ; b, x 2 . . p. 168 



Fig. 7. Trochalia depressa (Voltz). Upper Kimmeridgian, Dakacha Limestones. 

 Melka Dakacha, N.E. Kenya. G. 76375 : axial section (partly retouched), x 1 . p. 172 



