Plate IV. 
LiTHOPHAGA MANUANENSis, R. B. Newton (p. 43). 
Loc. Tributaries of the Manuan Creek. 
Fig. 1. Lateral view of specimen, showing right valve. 
,, 2. Dorsal view of same, showing the closed valves. 
,, 3. Anterior end view of same specimen, showing the contiguous umbones, 
CucuLL^A wooDsi, R. B. Newton (p. 31). 
Loc. Tributaries of the Manuan Creek. 
Fig. 4. Internal view of left valve. 
,, 5. External view of same. 
,, 6. Hinge view of the right valve of another specimen. 
,, 7. Posterior aspect of a small example with both valves united, showing 
a circumscribed escutcheon area. 
,, 8. Dorsal view of same. 
,, 9. Surface structure taken from same specimen, magnified. 
Teigonarca, sp. (p. 35). 
Loc. Tributaries of the Manuan Creek. 
Fig. 10. External view of a left valve. 
11. Dorsal view of same, showing area, &c. 
,, 12. Interior of same, showing dentition and ligamental grooves. 
Trigonarca ligeriensis, Orbigny, sp. (p. 33). 
Loc. North end of False Bay. 
Fig. 13. External aspect of a large fragmentary example with a small Ostrseiform 
valve attached to its surface. 
,, 14. Hinge view of same, showing coarse dentition. 
,, 15. External view of a medium-sized example. 
,, 16. Inner view of same, showing radial sriations in the ventral region. 
,, 17. Exterior of small form. 
,, 18. Inner view of same specimen. 
[Unless otherwise notified the figures of the fossils are drawn of the natural 
size.] 
