28 NEW YORK STATE MUSEUM 



Tentaculites ? acus, sp. nov. 



Plate 3, fig. 1-7 



1892. Coleolus sp.1 Clarke, op. cit. p. 413 



Shells having as large size as those of Tentac. elongatus but 

 with the exterior surface smooth or with very faint, distant, broad, con- 

 centric depressions and fine, indistinct and somewhat irregular growth striae. 

 The internal cast is similar to that of Tentac. elongatus but has 

 the constrictions less deep. Specimens of this species are not uncommon. 



The wall of this species is thick and cellular, and a transverse 

 section gives two or more concentric circles at any plane, showing the 

 insheathment of the funnel-like divisions of the interior. This structure 

 is much more pronounced than in any species of Tentaculites 

 observed by the writer and, though more regular than in Cornulites, 

 may prove to be of the same nature. 



PTEROPODS (?) 



Conularia cf. desiderata Hall 



1857. Conularia desiderata Hall, Paleontology of New York. 3 : 480, pi. 72a 

 fig. 4 



A single fragment of medium size, bearing a clearly exposed 

 septum, approaches this species, described from the Oriskany elsewhere 

 in New York. Its surface characters are sufficiently preserved to demon- 

 strate the broad sulci at the angles and the absence of median furrows 

 on the four sides, but the detailed sculpture of the concentric lines is 

 not clearly retained. 



GASTROPODS 



Bellerophon sp. ? 

 A single specimen shows the inner whorls of a broad backed species. 



Cyrtolites expansus Hall 



Plate 3, fig. 30-23 



1859. Cyrtolites f expansus Hall, Paleontology of New YorTc. 3 : 479, pi. 104, 



fig. 4, 5 

 1892. Cyrtolites expansus Clarke, op. cit. p. 413 i 



The original figures and description of this shell from the Oriskany 

 sandstone of New . York were evidently based on internal casts, and 



