60 NEW YOEK STATE MUSEUM 



Stictopora sp ? 



A few specimens of this genus have been observed, but none 

 have the exterior well enough preserved to justify an attempt at their 

 identification, though in general aspect as well as in the character of 

 the cells so far as ascertainable the species is very closely allied to 

 St. granulata Hall of the Helderbergian. 



Unitrypa lata Hall 



1887. Fenestella (Unitrypa) lata Hall, Paleontology of New York. 6:136, 

 pi. 53, fig. 1-10 



This species was described from the Onondaga limestone of Wai- 

 pole Ont. It is not uncommon in the Oriskany of Becraft mountain. 



Unitrypa acclivis Hall 



1887. Fenestella ( Unitrypa) acclivis Hall, Paleontology of New York. 6 : 138, 

 pi. 52, fig. 16-23. 



Not common. The originals were from the Onondaga limestone of 

 Walpole Ont. 



Lichenalia cf. crassa Hall 



For figures of L. crassa, see Paleontology of New York. \. 6, pi. 11, 

 fig. 21, 22 



Specimens which seem to agree with this Helderbergian species 

 are occasionally found. 



Polypora separata Hall (?) 

 See Paleontology of New York. 6 : 166, pi. 39, fig. 10, 11 



Specimens very similar to this species but having larger fenest- 

 rules are common. Polypora separata was described from the 

 Onondaga limestone of Walpole Ont. 



Polypora, sp. indes. 



Polyporella cf. compressa Hall 

 Of the Helderbergian. 



