PLATE VIII. 



FIGS. PAGE 



I. Merctri.r uitenliagensis sp. nov. ... ... ... ... ... 151 



1. Eight valve; In, part of surface x 4. Grass Ridge, three 

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



2,3. Mactra ? dub in sp. nov. ... ... ... ... ... ... 156 



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

 River (141h). 



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



4. Plenromya baini Sharpe ... ... ... ... ... ... 157 



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

 chester, Sunday's River (495g). 



5. Thracia sp 160 



Right valve. Railway cutting between milestones 24J-24f on the 

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

 Uitenhage (331). 



6, 7. Turbo atJicrstoni Sharpe ... ... ... ... ... ... 164 



On. Apertural aspect. Cliff below the old school-house on the 

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

 7. An immature specimen ; la, x 2 ; 11>, apertural aspect, x 2. 

 Same locality and number. 



8. Titrlo rogersi sp. nov. ... ... ... ... ... ... 167 



8a. Apertural aspect ; 8l>, the same view as fig. 8, x 2. Cliff 

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

 Dunbrodie (282). 



9. Turbo minutulus sp. nov. ... ... ... ... ... ... 168 



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

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

 (305). 



10. Natica ititenJiagensis ? sp. nov. ... ... ... ... ... 172 



lOrt. Apertural aspect. Railway cutting between milestones 

 24^-24| on the line from Uitenhage to Graaff-Reinet, about three 

 miles from Uitenhage (350). 



II. Natica nitenliagensis sp. nov. ... ... ... ... ... 171 



llrt. Apertural aspect. Zwartkop's River. Specimen in the col- 

 lection of the Geological Society of London. 



