PLATE XV. 



Figure 1. Tcxtularia twnidiihim Ciishman. n. sp. Front view cif adult phowing central tumid area. X 25. 



2. Textiilwia Inmidiihim Cushman, n. sp. a, Front view; b, apertural view of young specimen. X -I". 



3. Boliirina amygdalacformis H. B. -Brady. Front view, showing the anastomosing ornamentation of the early 



portion and the coarsely pitted last chambers. X 120. 



4. Boliiina nitida II. B. Brady. Front view. X 120. 



5. BoHvinamississippicnsis V-as\\ui3.n, Ti. s\>. Front view. X IGO. 



109 



