FAUNA OF ORTHAULAX PUGNAX ZONE. 165 



Plate 20. 



Fig. 1. Area grammatodonta Dall, iuterior of right valve, lou. .30 mm., p. 118. 

 (See pi. 22, fig. 3.) 



2. The same, from above. 



3. Modiolus Uandus Dall, anterior view, lat. 20 mm., p. 127. (See fig. G.) 



4. Semele sardonica Dall, profile from in front, p. 154. (See fig. 7.) 



5. OrbitoUtes floridanus Conrad, typical spiral form, p. 157. (See pi. 21, 



figs. 7, 11), diam. 12 mm.) 



6. Modiolus Uandus Dall, right side, the left valve overlapping a little 



below, Ion. 43.5 mm., p. 127. 



7. Semele sardonica Dall, right valve Ion. 16 mm., p. 154. 



8. MaerocalHsta (Paradione) aeuminata Dall, interior of right valve, Ion. 



16 mm., p. 146. 



9. The same, from in front. 



10. The same, exterior of right valve, Ion. 16.5 mm. (See also pl. 24, fig. 2.) 



11. Glycymeris lamyi Dall, alt. 16.5 mm., p. 122. 

 13. The same, interior of the valve. 



12. Modiolus blandus Dall, view from above; note the overlapping of the 



left valve; Ion. 43.5 mm., p. 127. 



Plate 21. 



Fig. 1. Phacoides tampaensis Dall, Ion. 5 mm., p. 138. 



2. The same, from in front. 



3. Erycina ? indecisa Dall, Ion. 4 mm., p. 141. (See fig. 8.) 



4. Corhiila Icaghriana Dall, anterior view, p. 155. 



5. The same, in profile, Ion. 10 mm. 



6. Leda posti Dall, Ion. 14 mm., p. 117. (See fig. 9.) 



7. OrbitoUtes floridanus Conrad, orbicular (? sexual) form, diam. 6 mm., 



p. 157. 



8. Erycina ? indeeisa Dall, viewed from in front, p. 141. (See fig. 3.) 



9. Leda posti Dall, interior of right valve. Ion. 9.5 mm., p. 117. 



10. Cardita shepardi Dall, interior of left valve, Ion. 9.5 mm., p. 1.33. 



11. OrbitoUtes floridanus Conrad, spiral form. p. 157. (See also pl. 20, fig. 



5, for opposite side), diam. 12 mm. 



12. Cardita shepardi Dall, exterior of left valve, Ion. 9.5 mm., p. 133. 



13. 'Nucula tampae Dall, from in front, p. 116. 



14. The same, in profile, Ion. 7.3 mm. 



15. Codakia (Jagonia) scurra Dall, Ion. 11 mm., p. 1.36. 



16. The same, from above. 



17. Area (Scapharca) hypomcla Dall, interior of right valve, Ion. 31 mm., 



p. 321. 



18. The same, exterior view. 



Plate 22. 



Fig. 1. TelUna chipolana Dall. left valve, Ion. 20 mm., p. 151. 



2. The same, interior view. 



3. Area grammatodonta Dall, exterior of right valve. Ion. 35 mm., p. 118. 



(See also pl. 20, figs. 1, 2.) 



4. Cyrena pompholyx Dall, right valve, Ion. 50 mm., p. 1.34. 



5. The same, from above. 



