162 Annals of the Carnegie Museum. 



Camarot(Kcliia congregata Conrad. 



Pal. N. Y., Vol. IV, 1867, p. 341, pi. 54. 



This species is very rare, and only one or two specimens were found. 

 The species seems to reach its greatest development toward the east 

 as it has not been reported from Thedford, Eighteen Mile Creek or 

 Livonia, and is rare in the Cayuga Lake section. It is abundant at 

 certain localities in Otsego and Albany counties. 



Caiiiatvta'chia horsfordi Hall. 



Pal. N. v., Vol. IV, 1867, p. 339, pi. 54. 



In the present material this species is very rare. It occurs rarely 

 throughout the section of Eighteen Mile Creek, and was found in the 

 Encrinal bed and in the Cysfodicta zone at Cayuga Lake. It has not 

 been reported from the eastern New York counties. 



CainarofiVihia sapplio Hall. 



Pal. N. Y., Vol. IV, 1867, p. 34, pi. 54. 



This is another species which occurs only in the Cysfodicta bed and 

 in the Encrinal at Cayuga Lake. It has been found in all sections 

 from Thedford to the eastern counties, is common below the Encrinal 

 limestone at P^ighteen Mile Creek and abundant in the Upper Hamil- 

 ton at West Berne, Albany Co. In the faunule from Canandaigua 

 Lake it is very rare. 



Trigcria lepida Hall. 



Pal. N. Y.,V1II, 1S93, p. 274, pi. 50, figs. 36-40. 



This uncommon fossil, of which fifteen specimens were obtained 

 from this material, is here much smaller than the typical specimens 

 The largest is 6.8 ram. long and 6 mm. wide, and has 14 striae on the 

 brachial and 15 on the pedicle valve. The largest specimen figured 

 by Hall is 11 mm. long and 9.5 mm. wide. According to that 

 author an adult should have from 20 to 25 plications. 



Of the sections under consideration, Thedford is the only one 

 which has yielded specimens of this shell. 



Eunella liiikhcui Hall. 



Pal. N. v.. Vol. IV, 1867, p. 397, 1)1. 60, figs. 49-65. 



This is another species with an eastern distribution. It is common 

 from Canandaigua Lake to Albany Co., but has not been reported 

 from Thedford, Eighteen Mile Creek or Livonia. The specimens 

 from the present material do not show any unusual characters. 



