40 NEW YORK STATE MUSEUlt 



Megalanteris ovalis Hall 



Plate 5, fig. 13-H 



1892. Rensselaeria suessanaf and R. ovalis Clarke, op. cit. p. 414 



For other figures see Paleontology of New York. v. 3, pi. 106 ; v. 8, 

 pt 2, pi. 77, fig. 12-22 



Specimens are commonly found showing considerable variation in 

 outline, but well characterized in all specific details. 



Eatonia medialis Vanuxem 

 1892. Eatonia medialis Clarke, op. cit. p. 414 



For figures see Paleontology of New York. v. 3, pi. 37, fig. 50, 

 a-y; v. 8, pt 2, pi. 61, fig. 29-35 



A few incomplete specimens indicate the presence of this Helder- 

 bergian species in the Becraft mountain Oriskany. 



Eatonia peculiaris Conrad 

 1892. Eatonia peculiaris Clarke, op. cit. p. 414 



For figures see Paleontology of New York. v. 3, pi. 38, fig. 21-26; 

 101, fig. 2; v. 8, pt 2, pi. 61, fig. 17-26 



Normal examples of this species are occasionally found. It is a 

 well known species of both the Helderbergian and Oriskany faunas. 



Camarotoechia barrandii Hall 

 1892. Rhynchonella barrandii Clarke, op. cit. p. 414 



For figures see Paleontology of New York. v. 3, pi. 103, fig. 3-8 

 Specimens of the Rhynchonellas observed in these beds have proved 

 to be very unsatisfactory for study and for the most part, for identifi- 

 cation. A part of a large interior of the pedicle-valve, attaining the 

 full proportions of the figures of the species given in the work cited, 

 is safely referred to this species ; and a few other specimens with less 



security. 



(?) Camarotoechia fitchana Hall 



For figures see Paleontology of New York. v. 3, pi. 101, fig. 1, a, b 

 A large but imperfect brachial valve bearing about 75 obliquely 

 angular ribs is referred with reserve to this species. 



