Whiteavesia cincta nov. 



Page 95 

 Fig. i Holotype. x 3. 



Snake Hill beds. Snake hill, Saratoga county, N. Y. 



Whiteavesia cumingsi nov. 

 Page 96 



Fig. 2 Specimen that is probably but little distorted. Holotype. x 2. 

 Fig. 3 Another specimen, showing a frequent expression of the form. 

 Paratype. x 2. 



Snake Hill beds. Snake hill, Saratoga county, N. Y. 







Prolobella ? trentonensis (Conrad) 



Page 97 

 Fig. 4 Specimen, x 2. 



Canajoharie shale. Canajoharie, Montgomery county, N. Y. 





 Orthodesma ? subcarinatum nov. 



Page 96 



Fig. 5,6,7 Specimens (cotypes) showing the more frequent and apparently 

 least distorted appearances of the species in the folded shales 

 of Snake hill, x 1.5. 



Fig. 8 Dorsal view, x 1.5. 



Snake Hill beds. Snake hill, Saratoga county, N. Y. 



Whitella elongata nov. 



Page 98 



Fig. 9 Holotype. Natural size. 

 Fig. 10 Dorsal view of same. 



Snake Hill beds. Snake hill, Saratoga county, N. Y. 



Clidophorus ventricosus nov. 

 Page 99 



Fig. II, 12 Lateral and anterior views of the holotype. x 3. 



Fig. 13 A more elongate specimen showing hinge-denticles, x 1.5. 



Fig. 14 A specimen with very distinct clavicle, x 3. 



Snake Hill beds. Snake hill, Saratoga county, N. Y. 



Clidophorus foerstei nov. 

 Page 99 



Fig. 15, 16 Lateral and vental views of tne holotype. x 3. 



Snake Hill beds. Snake hill, Saratoga county, N. Y. 

 All originals are in the New York State Museum. 



134 



