FROM TANGANYIKA AND KENYA 167 



1874. Natica phasianelloides d'Orbigny ; de Loriol : 349, pi. 8, fig. 24. 

 i960. Globularia phasianelloides (d'Orbigny) ; Joubert, pi. 12, fig. 5. 



Material. Two specimens (nos. G. 76378, G. 76397). 



Localities and horizons. Low hills at Dusse, ij miles S.E. of Rahmu, N.E. 

 Kenya ; Upper Oxfordian, Seir Limestones. 2 miles S. of Melka Dakacha, N.E. 

 Kenya ; Upper Kimmeridgian, Dakacha Limestones. 



Remarks. This species is characterized by its elevated spire, which occupies 

 about one-third of the total height of the shell, by the feeble convexity of its whorls, 

 and by its relatively narrow last whorl, the maximum diameter of which is about 

 equal to the height of the aperture. The larger of the two specimens is about 44 mm. 

 high, with a diameter of 31 mm. The African specimens agree well with published 

 figures of specimens of the species from Europe, particularly those of de Loriol (1872). 

 In Europe the species occurs in the Lower Kimmeridgian. 



Globularia hennigi sp. nov. 

 PI. 28, figs. 5a, b, c 



Specific name. After E. Hennig, an early worker on the Jurassic geology of 

 Tanganyika. 



Diagnosis. Shell of small-medium size (height of holotype 16 -6 mm.), globose. 

 Spire low, occupying about one-third of the height of the shell, coeloconoid, with the 

 apex very acute. Whorls strongly and evenly convex ; last whorl strongly convex 

 at periphery, and with an evenly convex basal outline ; maximum diameter of last 

 whorl slightly less than height of shell. No umbilicus. Growth-lines moderately 

 prosocline. (The aperture is not preserved intact.) 



Holotype. No. G. 76391. The only specimen. 



Locality and horizon. 2 miles S. of Melka Dakacha, N.E. Kenya ; Upper Kim- 

 meridgian, Dakacha Limestones. 



Remarks. This species closely resembles Natica crassitesta Dietrich (1914 : 124, 

 pi. 11, figs. 18a, b), from the Neocomian of Tendaguru, but has a slightly less elevated 

 spire. Natica venelia de Loriol (1874 : 341, pi. 8, figs. 9-12), from the Portlandian 

 of Boulogne, France, has a slightly higher spire and strongly pronounced growth- 

 rugae. The French Bathonian form Natica lanceolata Piette, transferred to Ampul- 

 Una and figured by Cossmann (1885 : 137, pi. 3, fig. 24 ; pi. 16, fig. 32), also has a 

 higher spire. 



Family NATICIDAE Gray 1834 



Genus PICT AVI A Cossmann 1925 



Pictavia tanganyicensis sp. nov. 



PI. 28, figs. 6a, b, c, ya, b 



Diagnosis. Shell small (height of largest specimen, when complete, c. 8 mm.), 

 ovate-conical, diameter about two-thirds of height, aperture occupying slightly less 



