PLATE 19 



Fig. 1. Tancredia manderaensis sp. nov. Uppermost Jurassic, Gudediye Beds. 

 Matasafara, 15 miles W. of Mandera, N.E. Kenya. Latex " squeeze " from holotype, 

 LL. 35190, xi . . . . . . . . . . . . p. 119 



Fig. 2. Tancredia sp. " A ". Oxfordian, Golberobe Beds. Korkai Hammassa, 19 

 miles E. of Takabba, N.E. Kenya. L. 93625, x 1 . . . . . . p. 118 



Fig. 3. Tancredia sp. " B ". Oxfordian, Golberobe Beds. Ogar Wein, 17 miles N.W. 

 of Wergudud, N.E. Kenya. L. 93614, x 1 . . . . . . . .p. 118 



Fig. 4. Quenstedtia saggersoni sp. nov. Oxfordian, Golberobe Beds. Ogar Wein, 

 17 miles N.W. of Wergudud, N.E. Kenya. Holotype, L. 93600, x 1 . . .p. 119 



Fig. 5. Quenstedtia jouberli sp. nov. Upper Kimmeridgian, Dakacha Limestones. N. 

 of Figfirya, northern Raiya hills, N.E. Kenya. Holotype, L. 922 13, x 1 . . . p. 120 



Fig. 6. Quenstedtia saggersoni sp. nov. Oxfordian, Golberobe Beds. Korkai Ham- 

 massa, 19 miles E. of Takabba, N.E. Kenya. Paratype, L. 93636, x 1 . . . p. 119 



Figs, ja, b. Corbula mandawaensis sp. nov. Bajocian (?). Depth 48-50 feet, Mandawa 

 well no. 6, Tanganyika. Paratype, LL. 35149, a right valve : a, x 1 ; b, x 4 . p. 121 



Figs. 8a, b. Same species. Bajocian (?). Depth 46-48 feet, Mandawa well no. 6, 

 Tanganyika. Holotype, LL.35 148, a left valve : a, x 1 ; b, x 4 . . . p. 121 



Figs, ga, b. Corbula tanganyicensis sp. nov. Bajocian (?). Depth 4510-4520 feet, 

 Mandawa well no. 7, Tanganyika. Paratype, LL.35151 : a, X I ; b, X 5 . . p. 122 



Fig. 10. Corbula didimtuensis sp. nov. Upper Lias, Toarcian. Didimtu hill, 2 miles 

 S. of Bur Mayo, N.E. Kenya. Paratype, LL.35074, x 1 . . . . . p. 120 



Figs. 11a, b, c. Same species, horizon and locality. Holotype, LL. 35073 : a, left 

 valve ; b, right valve ; c, dorsal view, all x 1 . . . . . . . p. 120 



Figs. 12a, b, c, d. Corbula tanganyicensis sp. nov. Bajocian (?). Depth 4510-4520 feet, 

 Mandawa well no. 7, Tanganyika. Holotype, LL. 35150 : a, x 1 ; b, left valve, x 5 ; 

 c, dorsal view, X 5 ; d, right valve, X 5 . . . . . . . . p. 122 



Figs. 13a, b. Corbula kailtaensis sp. nov. Oxfordian, Golberobe Beds. Kailta, 

 Golberobe hills, N.E. Kenya. Holotype, L. 92036 : a, x 1 ; b, x 2 . . . p. 125 



Figs. 14a, b, c. Corbula pindiroensis sp. nov. Bajocian (?). Depth 166-170 feet, 

 Pindiro well no. 1, Tanganyika. Holotype, LL. 35152 : a, right valve, x 1 ; b, right 

 valve, x 2 ; c, left valve, x 2 ......... p. 122 



Figs. 15a, b. Same species. Bajocian (?). Depth 170-174 feet, Pindiro well no. 1, 

 Tanganyika. Paratype, LL. 35153 : a, left valve, X 1 ; b, left valve, x 2 . . p. 122 



Fig. 16. Pleuromya didimtuensis sp. nov. Upper Lias, Toarcian. Didimtu hill, 

 2 miles S. of Bur Mayo, N.E. Kenya. Holotype, LL. 35079, x 1 . . . . p. 131 



Figs. 17a, b, c. Corbula kidugalloensis sp. nov. Bajocian. 5 miles N.W. of Kidugallo, 

 Tanganyika. Holotype, LL. 35154 : a, left valve, X 1 ; b, left valve, x 2 ; c, dorsal 

 view, x 2 ............. p. 123 



Figs. 18a, b. Corbula asaharbitensis sp. nov. Bathonian [? or Callovian], Asaharbito 

 Beds. 1 mile N. of Asaharbito, N.E. Kenya. Holotype, LL. 13230, a left valve : a, x 1 ; 

 b, X 5 p. 124 



Figs. 19a, b, c. Corbula earnest sp. nov. Bajocian. 6 miles N.W. of Kidugallo, 

 Tanganyika. Holotype, LL. 35155 : a, left valve, X 1 ; b, left valve, x 2 ; c, dorsal 

 view, x 2 ............. p. 123 



Fig. 20. Myopholas manderaensis sp. nov. Uppermost Jurassic, Gudediye Beds. 

 Matasafara, 15 miles W. of Mandera, N.E. Kenya. Holotype, L. 92271, x 1 . . p. 130 



