1240 



NEW YORK STATE MUSEUM 



PLATE 1 



Pentremites leda Hall 



Page 907 



1 The only example of this species observed. x3. Canan 

 daigua lake. N. Y. 



Paracyclas lirata Conrad mut. pygmaea nov. 

 Page 910 



2, 3 Side and dorsal view. xl3. Canandaigna lake, N. Y. 



Nucleospira concinna mut. pygmaea nov. 



[See pi. 2, fig. 5] 

 Page 904 



1 Dorsal view of specimen figure 5, plate 2. xl3. Greigs 

 ville N. Y. 



Leda rostellata Hall mut. pygmaea nov. 

 Page 909 



5 Dorsal view. xl3. Canandaigua lake, N. Y r . 



6 Left valve. xl3. Greigsville N. Y. 



Nuculites oblongatus Conrad mut. pygmaeus nov. 



Page 909 



7 Cast of left valve. x8. Moscow N. Y. 



Palaeoneilo plana Hall mut. pygmaea nov. 



Page 909 



8, 9 Views of an internal cast. x3. Livonia shaft, N. Y. 



Nucula corbuliformis Hall mut. pygmaea nov. 



Page 908 



10. 11 Internal cast, dorsal and lateral views. x2. Livonia 

 shaft, N. Y. 



Palaeoneilo constricta Conrad mut. pygmaea nov. 



Page 910 



12, 13 Dorsal and left views of internal cast. xl3. Mos- 

 cow N. Y. 



Nucula lirata Hall mut. pygmaea nov. 



Page 908 



14, 15 Oblique anterior and left lateral views. xl3. Livonia 

 shaft, N. Y. 



Nuculites triqueter Conrad mut. pygmaeus no'-. 



Page 909 



16, 17 Bight and dorsal aspects of an internal cast. c!3. 

 Moscow- X. Y. 



