PLATE XL. 
PAGE 
Pigs. 1, 2. Terebea unilineata Conrad 138 
1. Ventral view of fragment. Plum Point. 
2. Ventral view. Duplin County, North Carolina. 
Pigs. 3, 4. Tekebra (Acus) curvilineata Dall var. whitfieldi n. var.139, 140 
3. View of one of the types of T. curvilineata Whitfield. Jericho, 
New Jersey. U. S. National Museum. 
4. Ventral view. Plum Point. 
Fig. 5. Terebra (Acts) curvilineata Dall var. dalli n. var 139, 140 
5. Ventral view. Greensboro. 
Figs. C, 7. Terebra (Acus) curvilineata Dall var. cai.vebtensis n. 
var 139. 141 
6. View of fragment showing typical sculpture. Plum Point. 
7. Ventral view of more complete specimen. Same locality. 
Fig. 8. Terebra (Acus) curvilirata Conrad 141 
8. Ventral view. St. Mary's River. 
Fig. 9. Terebra (Acus) sincera Dall 142 
9. Ventral view of type. St. Mary's River. U. S. National Museum. 
Fig. 10. Ticuebka (Hastula) si:mplex Conrad 143 
10. Ventral view. St. Mary's River. 
Fig. 11. Terebra (Hastula) simplex Conrad var. sublirata Conrad... 144 
11. Ventral view. St. Mary's River. 
Pigs. 12, 13. Terebra (Hastula) i.nornata Whitfield 144 
12. Ventral view of a small specimen. St. Mary's River. 
13. Same view of a larger specimen showing revolving striae. Same 
locality. 
Fig. 14. Terebra (Hastula) patuxentia n. sp 145 
14. Ventral view. Jones Wharf. 
Figs. 15-17. Coxus diluvianus Green 145 
15. Ventral view of large specimen. St. Mary's River. 
IC. Ventral view of young individual. Same locality. 
17. Ventral view of abnormal specimen. Same locality. Cornell 
University. 
