PLATE XXXVIII. 
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Figs. 1-3. Cythere planibasalis n. sp 99 
1. Lateral view of a risht valve. James River. Virginia. 
2. Posterior view of the same. James River. Virginia. 
3. Ventral view of the same. James River, Virginia. 
Figs. 4-6. Cythere tuomeyi n. sp 105 
4. Lateral view of a left valve X 25^^. Yorktown. Va. 
o, 0. Lateral views of a right valve X 2.5^1 and X 13Mi. apparently of the same 
species. Peach Blossom Creek, 3 miles southwest of Easton. 
Figs. 7-9. Cythere paucipunctata n. sp 105 
7. Lateral view of a left valve. Peach Blossom Creek. 
s, 9. Posterior and ventral views of same in outline. 
Fig. 10. Cythere ( ?) shattucki n. sp 121 
10. Lateral view of a left valve. Pawpaw Point. 
Pigs. 11-13. Cythere calvebti n. sp 100 
11-13. Lateral, anterior and ventral views of a left valve. Plum Point. 
Figs. 14-15. Cythere subovalis n. sp Ill 
14. l."». Lateral and ventral views of a left valve. Pawpaw Point. 
Figs. 16, 17. Cythere rugipunctata n. sp 118 
10. 17. Lateral and dorsal views of a left valve. James River, Virginia. 
Fig. 18. Cythere spiniplicata n. sp 120 
15. Lateral vie,w of a right valve. Plum Point. 
Figs. 19-21. Cythere francisca n. sp 110 
in. 20. Two lateral views of a right valve X 25',^ and X 13',3. Peach Blossom 
Creek. 
21. Ventral view of same. 
Figs. 22-24. Cythere punctistriata n. sp 108 
22, 23. Lateral and ventral views of a right valve. Peach Blossom Creek. 
24. Lateral view of a left valve, differing slightly from the type specimen. 
Church Hill. 
Figs. 25-27. Cythere vaughani n. sp 109 
2.5-27. Lateral, posterior and ventral views of a right valve. James River, 
Virginia. 
Pigs. 28-30. Cythere producta n. sp. ( see also Plate XXXVI ) 115 
28, 29. Lateral and ventral views of a riglit valve. Plum Point. 
30. Well-preserved right valve differing slightly iu surface markings. 
Plum Point. 
Fig. 31. Cythere lienenklausi n. sp 114 
31. Lateral view of a left valve. Plum Point. 
Pigs. 32, 33. Cythere doksicobnis bicornis n. sp. et var 114 
32. 33. Two lateral views of a left valve X 13Mi and X 2.51/3. Pawpaw Point. 
Figs. 34-36. Cythereis alaris n. sp 123 
34-36. Lateral, posterior and dorsal views of a left valve. James River, 
Virginia. 
Figs. 37-40. Cythebopteron nodosum n. sp 129 
37-40. Two lateral, a ventral and a posterior view of a right valve X 25% and 
X 13%. James River, Virginia. 
Unless stated otherwise all the figures on this plate are magnified 13% times. 
