PLATE LVIII. 
PAOK 
Fig. 1. LiTTORINA lERORATA (Say) 240 
1. Ventral view. Choptank River. U. S. National Museum. 
Fig. 2. FossAKUs (IsiPis) DALLi (Whitfield) 240 
2. Ventral view. Plum Point. 
Figs. 3a-3c. Solarium trilineatum Conrad 241 
3a. Profile of specimen from Plum Point. 
3b. Upper view of same specimen. 
3c. Lower view of same specimen. 
Figs. 4a, 4b. Solarium ampiiiterum Dall 242 
4a. Upper view. Greensboro. U. S. National Museum. (After Dall.) 
4b. Lower view of same specimen. (After Dall.) 
Fig. 5. RissoA (Oxoba) jiarylaxdu a n. sp 243 
5. Ventral view. Cove Point. 
Figs. Ga-Gc. Adeorbis supkakitidus S. Wood 243 
Ga. Profile view. St. Mary's River. Wagner Free Institute of 
Science. 
Cb. Upper view of the same specimen. 
Cc. Lower view of the same specimen. 
Figs. 7a, 7b. Ceucibulum ccstatum ( Say ) 244 
7a. Dorsal view. Plum Point. 
7b. Ventral view of the same specimen. 
Figs. S-10. Crucibulum costatum var. pileolum (H. C. Lea) 245 
8a. Dorsal view. St. Mary's River. 
8b. Ventral view of the same specimen. 
9a. Dorsal view of young individual. St. Mary's River. 
9b. Ventral view of the same specimen. 
10. Dorsal view of another specimen. Same locality. 
Fig. 11. Crucibulum constrictum Conrad 246 
11. Dorsal view. St. Mary's River. 
Figs. 12a, 12b. Crucibulum multilineatum Conrad 246 
12a. Dorsal view. Jones Wharf. 
12b. Ventral view of the same specimen. 
