PLATE XLIII. 
FAQE 
Figs. 1-3. Cancellaria alterxata Conrad 161 
1. Ventral view. Jones Wharf. 
2. Dorsal view. St. Mary's River. 
3. Ventral view of the same specimen. 
Pig. 4. Caxcellabia exgoxat.4^ Conrad 162 
4. Ventral view. Plum Point. 
Fig. 5. Cancellaria lunata Conrad 163 
5. Ventral view. St. Mary's River. 
Figs. 6a, 6b. Cancellaria prunicola n. sp 164 
6a. Dorsal view. Plum Point. 
61). Ventral view of the same specimen. 
Pig. 7. Cancellaria reticulatoides Conrad 164 
7. Ventral view. Plum Point. 
Fig. 8. Cancellaria (Admete) marylandica n. sp 165 
8. Ventral view. St. Mary's River. 
Fig. 9. Cancellaria (Trigonostoma) perspectiva Conrad 165 
9. Ventral view. St. Mary's River. Wagner Free Institute of 
Science. 
Fig. 10. Cancellaria (Trigonostoma) biplicifera Conrad 166 
10. Ventral view. Jones Wharf. 
Pigs. 11a. lib. Cancellaria (Sveltia) patuxentia n. sp 167 
11a. Dorsal view. Jones Wharf. 
lib. Ventral view of the same specimen. 
Fig. 12. Cancellaria (Sveltia) calvertensis n. sp 167 
12. Ventral view. Plum Point. U. S. National Museum. 
Figs. 13a, 13b. Cancellaria (Cancellariella) neritoidea n. sp 16S 
13a. Ventral view. Jones Wharf. 
13b. Dorsal view of the same specimen. 
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