48 JURASSIC BIVALVIA AND GASTROPODA 



Material. Two specimens. 



Localities and horizons. Chinamba, f mile S. of Amboni quarries, Tanga, 

 Tanganyika ; Callovian (?) (ex B.P. Coll.). Kindope valley, N.N. W. of Tendaguru, 

 Tanganyika ; Upper Kimmeridgian, Nerinella Bed. 



Genus MELEAGRINELLA Whitfield 1885 



Meleagrinella echinata (Smith) 



1817. Avicula echinata Smith : 67. 



1940. Echinotis echinata (Smith) ; Cox : 92, pi. 6, figs. 2-7. 



1948. Meleagrinella echinata (Smith) ; Cox & Arkell : 7. 



Material. Two specimens. 



Locality and horizon. S. of Tarawanda, 11 miles S.E. of Lugoba, Tanganyika ; 

 Callovian. 



Remarks. The specimens now recorded are not well preserved, but the number 

 of their ribs is the same as in typical specimens of M. echinata and considerably fewer 

 than in the specimens recorded below as M. radiata ; the ribs, moreover, are more 

 equal in strength than in M. radiata. Miiller and Hennig have reported M. echinata 

 from the " Dogger " of Tanganyika. 



Meleagrinella radiata (Trautschold) 

 PI. 5, figs, la, b, 2a, b, 3a, b, 4a, b 



i860. Aucella radiata Trautschold : 343, pi. 6, figs. 7, 8. 



1870. Avicula (Monotis) tenuicostata Greppin : 350, pi. 5, figs, ja, b (non Avicula tenuicostata 

 Roemer 184 1). 



1899. Pseudomonotis tenuicostata (Greppin) ; de Loriol : 169, pi. 10, fig. 36. 



1900. Pseudomonotis tenuicostata (Greppin) ; de Loriol : 126, pi. 6, fig. 44. 

 1900. Avicula lieberti Miiller : 542, pi. 19, figs. 14-17. 



1910. Avicula tschingira Krenkel : 203, pi. 20, fig. 12. 



1912. Pseudomonotis radiata (Trautschold) ; Sokolov : 108, pi. 2, figs. 11-13. 



1914. Pseudomonotis lorioli Rollier : 312 (for P. tenuicostata de Loriol non Greppin sp.). 



19146. Pseudomonotis tendagurensis Hennig : 182. 



1924. Pseudomonotis epechinata Hennig : 87. 



!933- Pseudomonotis tendagurensis Hennig ; Dietrich : 57, pi. 8, figs. 107-117. 



1938. Pseudomonotis lieberti (Miiller) ; Weir : 45, pi. 3, fig. 5. 



Material. Numerous specimens. 



Localities and horizons. Korkai Hammassa, 19 miles E. of Takabba, Ogar 

 Wein, 17 miles N.W. of Wergudud, and Chimpa, all N.E. Kenya ; Oxfordian, 

 Golberobe Beds. Plantations N. of Dakatcha village, and also £ mile E. of Merikano, 

 both in Malindi district, Coast Province, Kenya ; in loose boulders, respectively of 

 hard sandstone and of limestone, of uncertain age. Usigiwa river, 6 miles W.S.W. 

 of Kiwangwa, Bagamoyo hinterland, Tanganyika ; Upper Oxfordian. Kiwate- 

 Mkange track, 5 miles S.S.E. of Mkange, Bagamoyo hinterland, Tanganyika ; 



