1242 



NEW YORK STATE MUSEUM 



PLATE 2 



Grammysia constricta Hall mut. pygmaea nov. 

 Page 910 



1, 2 Dorsal and right aspects of a cast. xl3. Greigsville N. Y. 



Nucula varicosa Hall mut. pygmaea nov. 



Page 908 



3, 4 An incomplete cast. xl3. Greigsville N. Y. 



Nucleospira concinna Hall mut. pygmaea nov. 



[See pi. 1, fig. 4] 

 Page 904 



5 An internal cast. xl3. Greigsville N. Y. 



Conocardium eboraceum Hall mut. pygmaeum nov. 



Page 911 



6 Dorsal view. x4. Moscow N. Y. 



Buchiola retrostriata v. Buch mut. pygmaea nov. 



Page 911 



7 Right valve. x3. Moscow N. Y. 



Spirifer fimbriatus Conrad mut. pygmaeus nov. 



Page 901 



8, 9 Dorsal and ventral views. x!3. Canandaigua lake, N. Y. 



Strophalosia truncata Hall mut. pygmaea nov. 



Page 906 



10, 12 Dorsal (x5) and ventral (xl3) valves. Canandaigua 

 lake, N. Y. 



Productella spinulicosta Hall mut. pygmaea nov. 



Page 907 



11 Ventral valve. .x4. Canandaigua lake, N. Y. 



Ambocoelia umbonata Conrad mut. pygmaea nov. 



Page 905 



13-15 Posterior, dorsal and ventral views. xl3. Canan- 

 daigua lake, N. Y. 



Ambocoelia umbonata Conrad mut. pluto nov. 

 Page 905 



16-18 Ventral, profile and dorsal views. x!3. Canandaigua 

 lake, N. Y. 



