168 Anxals of the Carneche Museum. 



This species occurs in all the sections from Eighteen Mile Creek to 

 Albany Co. It is abundant in the present material, but does not 

 attain the size which the same species reaches in some other localities. 

 The largest si)ecimen is 15.4 mm. long and 23 mm. wide and the 

 adults have from 80 to 100 stride. 



Chflnetiis 1/ii/cronati/s Hall. 

 Pal. N. Y., Vol. IV., 1867, p. 124, pi. 20, fig. 1, pi. 21, fig. I. 



This species is common in the sections from Eighteen Mile Creek 

 to Albany Co. At Canandaigua Lake it is abundant. The largest 

 specimen is 11 mm. long and 13 mm. wide and the adults have from 

 25 to 40 striae. 



Chonetes scitiilus Hall. 



Pal. N. v., Vol. IV., 1867, p. 130, pi. 21, fig. 4. 



This is the most abundant species in the present collection and 

 there are at least 3,500 specimens. The adults are of the ordinar}' 

 size, the largest 6x9 mm. there are usually 30 to 40 strire on the 

 anterior margin. This is a common fossil in all zones of the sections 

 from Eighteen Mile Creek to Cayuga Lake, but is rare in the eastern 

 counties. 



Choneies robustus Raymond. 



Am. Jour. Sci., Vol. XVII. , p. 289, pi. XVII, rows i, 2. April, 

 1904. 



This species is not uncommon in the material. It occurs also in 

 East Bethany, N. Y. 



Strophalosia tnincaia Hall. 



Pal. N. v.. Vol. IV., 1867, p. 160, pi. 23, figs. 12-24. 



Though it has not been found in the Thedford or Eastern New 

 York sections, this species is common in certain zones of the sections 

 from Eighteen Mile Creek to Cayuga Lake. At Eighteen Mile Creek 

 and Cayuga Lake it occurs below the Encrinal, and at Livonia above 

 it. It is common in the present faunule and of fair size. 



Proihictella spiiiiilicosta Hall. 



Pal. N. Y., Vol IV., 1867, p. 160, pi. 23. 



This species is rare, and usually poorly preserved in this locality. 

 It occurs in all three divisions (upper, Encrinal, and lower Hamil- 

 ton), at Eighteen Mile Creek, Livonia, and Cayuga Lake. 



Rhipidomella penelope Hall. 



Pal. N. Y., Vol. IV, 1867, p. 50, pi. 6. 



