PLATE 12 



Figs, la, b. Myophorella quennelli sp. nov. Kimmeridgian. W. of Mabokweni, 4 

 miles N.W. of Tanga, Tanganyika. Holotype, LL.11809 : a, x 1 ; b, x 2 . p. 79 



Figs. 2a, 6. Myophorella kiwawaensis sp. nov. Upper Kimmeridgian. Kiwavva stream, 

 2400 yards S.E. of Mitekera survey beacon, northern Mandawa area, Tanganyika. 

 Holotype, LL.35110 : a, x 1 ; b, x 3 . . . . . . . p. 80 



Figs. 3a, b. Rutitrigonia stefaninii (Venzo). Upper Kimmeridgian, Dakacha Lime- 

 stones. 3 miles N.E. of Melka Dakacha, N.E. Kenya. L. 92180 : a, x 1 ; b, x 2 p. 81 



Fig. 4. Opisthotrigonia curta (Aitken). Upper Kimmeridgian. Mpilepile stream, 

 800 yards N.E. of Mitole road junction, northern Mandawa area, Tanganyika. LL.35112, 

 Xi p. 81 



Fig. 5. Laevitrigonia dwanikana sp. nov. Upper Kimmeridgian, " Trigonia smeei " 

 Bed. Dwanika river, N.E. of Tendaguru, Tanganyika. Holotype, L. 52692, x 1 . p. 80 



Figs. 6a, b. Astavte kenti sp. nov. Bajocian (?), Pindiro Shales. Near site of Mandawa 

 well no. 1, Tanganyika. Holotype, LL.35113 : a, x 1 ; b, x 2 



Figs, ja, b. Same species, horizon and locality. Paratype, LL.35114 : a, x 



b, X 2 



Fig. 8. Astarte lurida J. Sowerby. Upper Lias, Toarcian. Didimtu hill, 2 miles S. 



Bur Mayo, N.E. Kenya. LL. 35044, x 1 . 



Figs, ga, b, c. Astarte aitkeni sp. nov. Callovian. Nchia stream, 2 miles W.N.W. 

 Mandawa, Tanganyika. Holotype, LL. 35189 : a, left valve, x 1 ; b, left valve, x 



c, dorsal view, x 2 . 

 Figs. 10a, b, c. Astarte didimtuensis sp. nov. Upper Lias, Toarcian. Didimtu hill, 



2 miles S. of Bur Mayo, N.E. Kenya. Holotype, LL. 35032 : a, left valve, x 1 ; b, left 

 valve, x 2 ; c, dorsal view, x 2 . . . . . . . . . p. 84 



Figs. 11a, b, c. Same species, horizon and locality. Paratype, LL. 35033 : a, right 

 valve, X 1 ; b, right valve, x 2 ; c, dorsal view, x 2 . . . . . p. 84 



Figs. 12a, b. Astarte pulfreyi sp. nov. Upper Lias, Toarcian. Didimtu hill, 2 miles 

 S. of Bur Mayo, N.E. Kenya. Holotype, LL. 35027 : a, right valve ; b, dorsal view, both 

 Xi p. 83 



Fig. 13. Same species, horizon and locality. Paratype, LL. 35028, x 1 . . p. 83 



Figs. 14a, b. Astarte subminima sp. nov. Upper Lias, Toarcian. Didimtu hill, 2 miles 

 S. of Bur Mayo, N.E. Kenya. Holotype, LL. 35042 : a, x 1 ; b, x 3 . . . p. 84 



Figs. 15a, b. Astarte sp. Upper Lias, Toarcian. Didimtu hill, 2 miles S. of Bur Mayo, 

 N.E. Kenya. LL. 35043 : a, x 1 ; b, x 3 . . . . . . . p. 85 



p- 



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P 



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