EXPLANATION OF PLATE III 



All figures one and two-thirds natural size 



Fig. 21 Macrocallista pittsburgensis Dall. Inner view of right valve p. 28 



Fig. 22. Macrocallista pittsburgensis Dall. Inner view of left valve p. 28 



Fig. 23. Leda lincolnensis n. sp. Outer view of left valve p. 35 



Fig. 24. Leda lincolnensis n. sp. Inner view of left valve p. 35 



Fig. 25. Leda washingtonensis n. sp. Outer view of right valve p. 34 



Fig. 26. Leda washingtonensis n. sp. Inner view of left valve p. 34 



Fig. 27. Nucula washingtonensis n. sp. Dorsal view p. 34 



Fig. 28. Nucula washingtonensis n. sp p. 34 



Fig. 29. Nucula washingtonensis n. sp. Outer view of left valve p. 34 



Fig. 30. Tellina lincolnensis n. sp. Outer view of left valve p. 42 



Fig. 31. Crassatellites lincolnensis n. sp. Outer view of left valve p. 38 



Fig. 32. Crassatelllites lincolnensis n. sp. Outer view of right valve p. 38 



Fig. 33. Crassatellites lincolnensis n. sp. Inner view of left valve p. 38 



Fig. 34. Glycimeris chehalisensis n. sp. Inner view of valve p. 35 



Fig. 35. Glycimeris chehalisensis n. sp. Outer view of valve p. 35 



Fig. 36. Cardium lincolnensis n. sp. Outer view of valve p. 40 



Fig. 37. Cardium lincolnensis n. sp. Inner view of valve p. 40 



Fig. 38. Ficus wynoochensis n. sp p. 45 



Fig. 39. Ficus wynoochensis n. sp. Posterior view p. 45 



Fig. 40. Crenella washingtonensis n. sp. Outer view of valve. Fig. x8. . . .p. 37 



Fig. 41. Crenella porterensis n. sp. Outer view of right valve p. 36 



Fig. 42. Crenella porterensis n. sp. Outer view of left valve p. 36 



Fig. 43. Acila schumard Dall. Outer view of right valve p. 28 



Fig. 44. Calyptraea washingtonensis n. sp. Anterior view p. 44 



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