FROM TANGANYIKA AND KENYA 47 



There is some doubt whether this form should be considered synonymous with 

 Pinna ornata d'Orbigny, a French Kimmeridgian species, one of the syntypes of 

 which has been figured by Cottreau (1932, pi. 66, fig. 15). The ribs below the median 

 carina seem to be weaker in P. ornata, but the difference is not great and only 

 relatively small specimens have so far been figured. 



Genus STEGOCONCHA Bohm 1907 

 Stegoconcha gmuelleri (Krenkel) 



PL 5, %• 8 



1910. Pinna G. Miilleri Krenkel : 203, pi. 21, fig. 5. 



1933. Stegoconcha solida Bohm var. tendagurensis Dietrich : 61, pi. 9, figs. 138, 139. 



Material. Several specimens. 



Localities and horizons, i mile N.W. of Tendaguru hill, Tanganyika, around 

 Kipande, W. of Tendaguru, and Kindope, N.N.W. of Tendaguru ; all Upper 

 Kimmeridgian, Nerinella Bed. Dusse, i\ miles S.E. of Rahmu, N.E. Kenya ; 

 Upper Oxfordian, Seir Limestones. 



Family MALLEIDAE Gray 1823 



Genus ELIGMUS Eudes-Deslongchamps 1856 



Eligmus rollandi Douville 



PI. 5 , figs. 5, 6 



1907a. Heligmus rollandi Douville : 105, pi. 15, figs. 1-3. 



1929. Heligmus rollandi Douville ; Weir : 23, pi. 1, figs. 24-28. 



1935a. Eligmus rollandi Douville ; Cox : 168, pi. 16, figs. 6-10. 



i960. Eligmus rollandi Douville ; Joubert, pi. 8, fig. 11. 



Material. Several specimens. 



Localities and horizon. Muddo Erri ; Kulong, 2 miles S.W. of Muddo Erri ; 

 Muddo river bed 4 miles S.W. of Muddo Erri ; S. of Rahmu-Melka Murri road, 6 miles 

 W. of Rahmu ; 14 miles W.S.W. of Rahmu ; all N.E. Kenya : Callovian [?-Lower 

 Oxfordian], Muddo Erri Limestones. 



Superfamily PECTINACEA 



Family OXYTOMIDAE Ichikawa 1958 



Genus OXYTOMA Meek 1864 



Oxytoma inequivalvis (J. Sowerby) 



PI- 5. fig- 7 



1819a. Avicula inequivalvis J. Sowerby : 78, pi. 244, figs. 2, 3. 



x 933- Oxytoma inaequivalvis var. hennigi Dietrich : 58, pi. 7, figs. 99-101. 



1940. Oxytoma inequivalve (J. Sowerby) ; Cox : 98, pi. 6, figs. 9-12. 



