FIGS.

1. Trigonia stowi sp. nov.

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Right valve. Cliff W. 20 S. from Comley's House, Sunday's
River (90h).

2-4. Trigonia conocardiiformis (Krauss)

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119

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2. Left valve; 2a, dorsal aspect; 2b, the same, × 2. Cliff on the
right bank of Sunday's River, on Commando Kraal (104h).
3. Left valve. Sunday's River.

4. Left valve, incomplete posteriorly. Railway cutting between
milestones 24-24 on the line from Uitenhage to Graaff-Reinet,
about three miles from Uitenhage (297). To compare with fig. 3,
for rib-development. A fragment of Serpula pinchiniana Tate is
adhering to the valve.

5. Cardita nuculoides Tate

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5. Left valve; 5a, frontal aspect; 5b, portion of surface orna-
mentation from the middle of the lower half of the valve, x 10.
Left side of Coega Valley, half a mile down from the railway
(466g).

6. Right valve; 6a, umbonal part × 2, showing concentric
sculpture. Coega River.

127

135

7. Cast of interior of a left valve. Bare slope W. 30 S. from the
middle of Barkly Bridge, on the farm Olifant's Kop, Sunday's
River (35h).

8. Drawn from a wax impression of the mould of the external
surface of a left valve. Left side of Coega Valley, half a mile
down from the railway (461g).

9. Left valve; 9a, frontal view.
House, Sunday's River (95h).
10. Right valve. Kloof on the left side of Zwartkop's River,
east-north-east of Red House (324).

11. Right valve; 11a, portion of surface in the posterior half of
the valve, × 2. Coega.

12. Right valve; 12a, frontal aspect; 12b, dorsal aspect. Kloof
S. 5 W. from Comley's House, right bank of Sunday's River (83h).

13. Left valve; 13a, frontal aspect. Left side of Coega Valley.
half a mile down from the railway (452g).

14. Meretrix uitenhagensis sp. nov.

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151

14. Left valve; 14a, dorsal aspect. Bare slope W. 30 S. from
the middle of Barkly Bridge, on the farm Olifant's Kop, Sunday's
River (30h).

1. Right valve; la, part of surface × 4. Grass Ridge, three
miles east-north-east of Uitenhage, Zwartkop's River valley (310).

2, 3. Mactra? dubia sp. nov.

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2. Right valve; 2a, dorsal view. Cliff on Buck Kraal, Sunday's
River (141h).

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

4. Pleuromya baini Sharpe

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4. Right valve; 4a, portion of surface x 4. Kloof behind Col-
chester, Sunday's River (495g).

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156

157

Right valve. Railway cutting between milestones 24-243 on the
line from Uitenhage to Graaff-Reinet, about three miles from
Uitenhage (331).

6, 7. Turbo atherstoni Sharpe

6a. Apertural aspect. Cliff below the old school-house on the
right bank of Sunday's River, Dunbrodie (351).

7. An immature specimen; 7a, x 2; 7b, apertural aspect, x 2.
Same locality and number.

8. Turbo rogersi sp. nov.

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8a. Apertural aspect; 8b, the same view as fig. 8, × 2. Cliff
below the old school-house on the right bank of Sunday's River,
Dunbrodie (282).

167

9. Turbo minutulus sp. nov. ...

168

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9a. Apertural aspect; 9b, the same, x 2. Cliff below the old
school-house on the right bank of Sunday's River, Dunbrodie
(305).

241-24 on the line from Uitenhage to Graaff-Reinet, about three
miles from Uitenhage (350).

11. Natica uitenhagensis sp. nov.

11a. Apertural aspect. Zwartkop's River. Specimen in the col-
lection of the Geological Society of London.