PLATE XLVI. 
Fig. 
Fig-. 
Fig. 
Figs. 
Fig. 
Fig. 
Fig. 
Fig. 
Nucula bellistriata. 
Page 318. 
1. A right valve, natural size. 
Hamilton group. Delphi, N. Y. 
2. A right valve enlarged to two diameters, showing the surface markings and anterior muscular 
scar. Hamilton group. North ville, Cayuga Co., N. Y. 
3 A right valve of broader form than usual, enlarged. 
4, 5. Two left valves enlarged, showing the form and surface characters. 
6. A large left valve, natural size. 
Hamilton group. Shore of Skaneateles la,he, N. Y. 
7. A specimen preserving- both valves, enlarged. 
Hamilton group. Tinker's falls, Onondaga Co., N. Y. 
8. An enlargement of the surface, from tig. 1. 
9. A cardinal view of a cast, enlarged. 
Hamilton group. Shore, of Canandaigua lake, N. Y. 
Nucula corbuliformis ? 
Page 319. 
Figs. 10, 11. Left and cardinal views of a cast of the interior, showing the muscular scars and hinge 
crenulations. 
Hamilton group. Shore of Canandaigua lake, N. Y. 
Figs. 35, 36. Left and cardinal views of a compressed specimen, showing characters similar to the preced¬ 
ing, enlarged to two diameters. 
Fig. 37. A partial cast of a right valve of obscure character, enlarged. 
Lower Chemung group. Ithaca, N. Y. 
