PLATE 2 



Figs. \a, b, c. Grammatodon kenyanus sp. nov. Upper Lias, Toarcian. Didimtu hill, 

 2 miles S. of Bur Mayo, N.E. Kenya. Holotype, LL. 35006 : a, x 1 ; b, c, x 2 . p. 30 



Figs. 2a, b. Same species, horizon and locality. Paratype, LL. 35007 ; a, X 1 ; 

 b, x 2 . . . . . . . . . . . . p. 30 



Fig. 3. Grammatodon (Indogrammatodon) irritans (Hennig). Upper Kimmeridgian, 

 " Trigonia smeei " Bed. 4th Kipande flag, W. of Tendaguru hill, Tanganyika. L.52698, 

 XI p. 32 



Fig. 4. Grammatodon {Indogrammatodon) virgatus (J. de C. Sowerby). Callovian ? 

 Lonji creek, W. of Mandawa, Tanganyika. Right valve, LL. 35089, x 1 . . . p. 31 



Fig. 5. Same species, horizon and locality. Left valve, LL. 35090, x 1 . . p. 31 



Figs. 6a, b. Grammatodon {Indogrammatodon) matapwaensis sp. nov. Upper Kim- 

 meridgian, N. of Matapwa, Pindiro area, Tanganyika. Holotype, LL.35091 : a, x 1 ; 

 b, x 3 p. 32 



Fig. 7. Grammatodon sublaevigatus (Zieten). Bathonian [? or Callovian], Asaharbito 

 Beds. 1 mile N. of Asaharbito, N.E. Kenya. L.83683, x 1 . . . . p. 30 



Figs. 8a, b. Eonavicula sp. " A ". Callovian [?-Lower Oxfordian], Muddo Erri 

 Limestones. Muddo Erri, 12 miles W. of Rahmu, N.E. Kenya. L. 92046, x 1 . P- 35 



Fig. 9. Grammatodon (Indogrammatodon) stockleyi Cox. Upper Oxfordian, Seir 

 Limestones. Wilderri hill, 11 miles S.S.W. of Rahmu, N.E. Kenya. L. 92249, x 1 p. 31 



Figs. 10a, b. Nuculana (Praesaccella) camelorum sp. nov. Toarcian or Bajocian, top 

 of Didimtu Beds. Camel track about 5 miles S. of Singu, N.E. Kenya, a, type series 

 (L.98280) on bedding plane, x 1 ; holotype (bottom right-hand corner) and group of 

 paratypes, x 2 . . . . . . . . . . . p. 28 



