PLATE i 



Fig. i. Palaeoneilo asaharbitensis sp. nov. Bathonian [? or Callovian], Asaharbito 

 Beds, i mile N. of Asaharbito, N.E. Kenya. Holotype, L. 83864, x 1 . . p. 25 



Figs. ia, b, c. Nuculana (Dacryomya) dodsoni sp. nov. Bathonian-Callovian, Bur Mayo 

 Limestones. Hagardulun, 25 miles N.E. of Tarbaj, N.E. Kenya, a, type series 

 (L.98274) on bedding plane, x 1 ; b, small group of paratypes, x 2 ; c, holotype, 

 L. 98280, x 2 . . . . . . . . . . . . . P- 27 



Figs. 3a, b. Nuculoma (Palaeonucula) bellozanensis (de Loriol). Upper Kimmeridgian, 

 Dakacha Limestones. 2 miles S. of Melka Dakacha, N.E. Kenya. Holotype, L.92293 : 

 a, x 1 ; b, x 2-5 . . . . . . . . . . . . P- 25 



Figs. 4a, b, c. Nuculana (Dacryomya) thompsoni sp. nov. Upper Lias, Toarcian. 

 Didimtu hill, 2 miles S. of Bur Mayo, N.E. Kenya. Holotype, LL. 35000 : a, x 1 ; b, 

 c, x 2-25 . . . . . . . . . . . . . p. 26 



Figs. 5a, b, c. Rollieria aequilatera (Koch & Dunker). Upper Lias, Toarcian. Didimtu 

 hill, 2 miles S. of Bur Mayo, N.E. Kenya. LL.35005 : a, x 1 ; b, c, x 3 . p. 29 



Figs. 6a, b, c. Nuculana (Ryderia) kenyana sp. nov. Upper Lias, Toarcian. Didimtu 

 hill, 2 miles S. of Bur Mayo, N.E. Kenya. Holotype, L. 35001 : a, x 1 ; b, c, x 2, 

 posterior end of shell restored .......... p. 27 



Figs, ya, b. Parallelodon pindiroensis sp. nov. Bajocian (?), Pindiro Shales. Lihima- 

 liao creek, Mandawa area, Tanganyika. Holotype, LL. 35086, x 1 . . . p. 29 



Figs. 8a, b. Same species, horizon and locality. Paratype, LL. 35087, x 1 . p. 29 



