258 



Report of the State Geologist. 



57. Paired nbilo muta, Hall. 



1885, Hall, Pal. X. Y., vol. 5, pt. 1, p. 337, pi. 49. 



This pretty little species lias a vertical distribution similar to the preceding, 

 but it is somewhat more abundant in the lowest two feet of the Moscow 

 shales. It has been found as low as the Strophalosia bed, but in this, as well 

 as in the shales above, it is extremely rare. 



58. Pal.eoneilo emarginata, Conrad. 

 1885, Hall, Pal. N. Y., vol. 5, pt. 1, p. 338, pi. 50. 



This is a common shell in the Hamilton (Lower) shales of this region, 

 being scattered through the upper twenty-five feet of the shales. The speci- 

 mens are usually smaller than those from more eastern localities, but they are 

 otherwise well developed. The largest specimen found measured 25 mm. in 

 length, by 12 mm. in height. 



Genus Macrodon, Lycett. 



59. Maorodox Hamiltont^e, Hall. 



1885, Hall, Pal. N. Y., vol. 5, pt. 1, p. 3-19, pi. 51. 



A single specimen, the posterior half of a right valve, was found in the 

 Hamilton shales. The specimen shows the form, and the characteristic 

 interrupted radii, thickened at their lower ends, and separated by the 

 concentric varices. The specimen conies from about ten feet below the 

 Encrinal limestone at Section B, 



Genus Grammysia, De Verneuil. 



60. Grammysia, sp. 



A fragment, probably of G. arcuata was found at Section B, about ten 

 feet below the Encrinal limestone. It shows the surface markings of that 

 species. (See Pal. N. Y., vol. 5, pt. 1, p. 373.) 



61. Grammysia, sp. 



A fragment resembling fig. 3, pi. 56, vol. 5, pt. 1, Pal. N. Y., was found at 

 Section B, fourteen to seventeen feet below the Encrinal limestone. 



