PLATE 17 



Fig. 1. Protocardia bipi sp. nov. Bajocian (?), Pindiro Shales. Lihimaliao creek, 

 Mandawa area, Tanganyika. Paratype. LL. 35130, x 1 . . . . p 



Fig. 2. Same species, horizon and locality. Paratype, LL. 35131, X 1 . . p 



Figs. 3a, b. Same species, horizon and locality. Holotype, LL. 35129 : a, left valve ; 

 b, dorsal view, both XI. ■ • • • • • • • • .p 



Figs. 4a, b. Protocardia rahmuensis sp. nov. Oxfordian, Rahmu Shales. 5^ miles 

 S.W. of Rahmu, N.E. Kenya. Holotype, L. 92257 : a, x 1 ; b, x 2-2 . . . p 



Figs. 5a, b. Protocardia schencki Miiller. Upper Kimmeridgian, " Trigonia smeei " Bed. 

 Tingutitinguti creek, Tendaguru, Tanganyika. L.52038 : a, x 1 ; b, X 2 . . p 



Fig. 6. Protocardia suprajurensis (Conte jean). Upper Kimmeridgian. N. of Matapwa, 

 Pindiro area, Tanganyika. LL. 35134, x i-i . . . . . . p 



Fig. 7. Ceratomyopsis basochiana (Defrance). Callovian. 2 miles E. of Magindu 

 Station, Tanganyika. L. 67164, xi. . . . . . . . .p 



Figs. 8a, b. Same species. Callovian [?-Lower Oxfordian], Muddo Erri Limestones. 

 Kulong, 2 miles S.W. of Muddo Erri, N.E. Kenya. L. 92082 : a, left valve ; b, posterior 

 end, both xi. . . . . . . . . . . . .p 



Fig. 9. Ceratomyopsis striata (d'Orbigny). Kimmeridgian, Hereri Shales. Hereri 

 river crossing, 3 miles S. of Melka Kunha, N.E. Kenya. L. 92191, x 1 . . . p 



Fig. 10. Pronoella putealis sp. nov. Bajocian (?), Pindiro Shales. Lihimaliao creek, 

 Mandawa area, Tanganyika. Paratype, LL.35142, x 1-5 . . . . . p 



Fig. 11. Same species, horizon and locality. Holotype, LL.35 141, x 1-5 . . p 



Fig. 12. Pronoella pindiroensis sp. nov. Bajocian (?), Pindiro Shales. Lihimaliao 

 creek, Pindiro area, Tanganyika. Paratype, LL. 35159 ; hinge-teeth of right valve, x 1 p 



Fig. 13. Same species and horizon. Near site of Mandawa well no. 1, Tanganyika. 

 Paratype, LL.35 138, X 1 . . . . . . . . ■ • • P 



Figs. 14a, b. Same species, horizon and locality. Holotype, LL. 35135 : a, right 

 valve ; b, dorsal view, both xi. . . . . . . . .p 



Fig. 15. Same species, horizon and locality. Paratype, LL. 35136, x 1 . . p 



Fig. 16. Same species and horizon. Lihimaliao creek, Pindiro area, Tanganyika. 

 Paratype, LL.35 140, Xi ........ ..p 



Figs. 17a, b. Same species and horizon. Near site of Mandawa well no. 1, Tanganyika. 

 Paratype, LL. 35137 : a, right valve ; b, dorsal view, both x 1 . . . . p 



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