PLATE VIII. 



FIGS. PA.GE 



I. Meretrix uitenliagensis sp. nov. ... ... ... ... ... 151 



1. Eight valve; la, part of surface x 4. Grass Eidge, three 

 miles east-north-east of Uitenhage, Zwartkop's Eiver valley (310). 



2,3. Mactra ? dubia sp. nov 156 



2. Eight valve ; 2a, dorsal view. Cliff on Buck Kraal, Sunday's 

 Eiver (141h). 



3. Left valve; 3a, dorsal view. Same locality (141h). 



4. Pleuromya baini Sharpe 157 



4. Eight valve ; 4a, portion of surface x 4. Kloof behind Col- 

 chester, Sunday's Eiver (495g). 



5. Thracia sp 160 



Eight valve. Eailway cutting between milestones 24J-24| on the 

 line from Uitenhage to Graaff-Eeinet, about three miles from 

 Uitenhage (331). 



6, 7. Turbo atherstoni Sharpe 164 



6a. Apertural aspect. Cliff below the old school-house on the 

 right bank of Sunday's Eiver, Dunbrodie (351). 

 7. An immature specimen ; 7a, x 2 ; 76, apertural aspect, x 2. 

 Same locality and number. 



8. Turbo rogersi sp. nov. ... ... ... ... ... ... 167 



Sa. Apertural aspect; 86, the same view as fig. 8, x 2. Cliff 

 below the old school-house on the right bank of Sunday's Eiver, 

 Dunbrodie (282). 



9. Turbo minutulus sp. nov 168 



9a. Apertural aspect ; 96, the same, x 2. Cliff below the old 

 school-house on the right bank of Sunday's Eiver, Dunbrodie 

 (305). 



10. Natica uitenliagensis ? sp. nov. ... ... ... ... ... 172 



10a. Apertural aspect. Eailway cutting between milestones 

 24-24f on the line from Uitenhage to Graaff-Eeinet, about three 

 miles from Uitenhage (350). 



II. Natica uitenhagensis sp. nov , ... 171 



lla. Apertural aspect. Zwartkop's Eiver. Specimen in the col- 

 lection of the Geological Society of London. 



