FAUNA OF ORTHAULAX PUGNAX ZONE. 167 



Plate 26. 



Fig. 1. Antig&na tarquinia Dall, left valve, Ion. 49 mm., p. 147. 



2. The same, from above. 



3. Venus halidona Dall, right valve, lou. 37 mm., p. 150. 



4. Modiolus {Brachydontes) grammatus Dall, left valve, Ion. 20 mm., 



p. 127. 



5. Venus halidona Dall, right valve, from above, Ion. 37 mm., p. 150. 



6. Venericardia serricosta Heilpriu, interior of left valve. Ion. 32 mm., 



p. 132. 



7. Lithophaga nuda Dall, from above specimen defective behind, lou. 56 



mm., p. 129. (See also pi. 24, flg. 4.) 



