﻿14 Bulletin 18 40 



Orthoceras primigenium Vanuxem PI. 3, Figs. S, 9. 



O. primigenium, Vannxem, Geol. Rept. 3rd Dist. N. Y., 1842, p. 36, fig. 4. 

 " " Pal. N. Y., Vol. 1, 1843, p. 13, pi. 3, figs, n, iia. 



" " Am. Mus. Nat. His., Btill., Vol. 2, p. 56, pi. 10, fig. 1. 



" Am. Pal., Vol. 3, Bull. 13, 1900, p. 20. 



Up to this time the siphuncle of this species has not been de- 

 scribed. The siphuncle of a very good uncrushed specimen found 

 at Tribes Hill was situated within half a millimeter of the edge 

 of the shell, was elliptical, the greatest diameter being 3 mm. 

 and width 2 mm, The cross-section of the shell is elliptical, the 

 greatest diameter being 11 mm. and width 8 mm. 



Distribution. — Common on the weathered surfaces of the upper 

 portions, of the section at Canajoharie, Ft. 

 Hunter, Tribes Hill, East Canada Creek, Yosts, 

 and other parts of the Mohawk Valley. 



GASTEROPODA 



Holopea (?) voluta, sp. nov. PI. 3, Fig. ir. 



Shell of medium size, height 11 mm. and the transverse diame- 

 ter 16 mm. Volutions three, increasing rapidly in size with the 

 growth of the shell. The volution near the aperture is angular 

 in cross-section, the angulation being sharp on the periphery. 

 The upper volutions do not show the angulation, but this may be 

 due to the fact that the shell is embedded in the matrix to some 

 extent. The coils seem to be discrete, but of this there is some 

 question. Umbilicus and aperture unknown. The shell is 

 embedded in chert which makes its separation from the matrix 

 impossible. 



Distribution. — This specimen was collected by Mr. C. H. Flory 

 from a cherty layer in the upper middle por- 

 tion of the Calciferous on the hill south of 

 Little Falls, N. Y. 



Turbo (?) dilucula Hall 



Turbo dilucula Hall, Pal. N. Y., 1847, P- I2 > pi- 3> fig- 7- 



A number of specimens which are probably of this species were 

 found in the cherty bed at Ldttle Falls. Concerning the occur- 

 rence of this species Hall says : " This fossil occurs in great num- 



