PLATE XLII. 
PAGE 
Figs. 1,2. Manoilia paeva ( Conrad ) 153 
1. Ventral view. Cove Point. 
2. Ventral view. Langley's Bluff. 
Pig. 3. Mangilia pakvoidea n. sp 154 
3. Ventral view. St. Mary's River. 
Fig. 4. Manoilia cornelliana n. sp 154 
4. Ventral view. Plum Point. Cornell University. 
Fig. 5. Manoilia patuxentia n. sp 154 
5. View of specimen from Jones Wharf. 
Fig. 6. Mangilla (Glyphcstoma) obtusa n. sp 155 
6. Ventral view. Plum Point. 
Fig. 7. Drillia incilifera (Conrad) 155 
7. Ventral view. Cove Point. 
Fig. 8. Drillia incilifera var. anqulata n. var 156 
8. Ventral view. St. Mary's River. 
Fig. 9. Drillia incilifera var. distans (Conrad) 156 
9. Ventral view. St. Mary's River. 
Fig. 10. Drillia whitfieldi n. sp 157 
10. Ventral view of type of D. elegans Whitfield (non Emmons). 
Jericho. New Jersey. U. S. National Museum. 
Fig. 11. Drillia calvertensis n. sp 158 
11. Specimen from Plum Point. U. S. National Museum. 
Figs. 12, 13. Drillia limatula Conrad 158 
12. Ventral view. St. Mary's River. 
13. Ventral view. Plum Point. 
Figs. 14, 15. Drillia limatula var. dissimilis Conrad 159 
14. Dorsal view. St. Mary's River. 
15. Ventral view. Same locality. 
Fig. 16. Drillia limatdla. var. pyramidalis n. var 160 
16. Ventral view. St. Mary's River. 
Fig. 17. Drillia pseudeburnea (Whitfield) 160 
17. Ventral view. Plum Point. 
u 
