264 Forty-sixth Report on the State Museum. 



JBellerophon patulus, Hall (?). 

 ^ Doubtfully referred to this species from the resemblance of the 

 specimen to fig. 10, pi. 24, pt. ii, vol. v, Pal. N. Y. 

 ^ Near the top of the hill, fully 100' higher than the preceding section, 

 is an exposure of arenaceous shale, 498 G. The shale, however, is 

 more argillaceous and somewhat more fossiliferous than that of 498 F. 

 The fossils identified are: 



Rhynchonella Sappho^ Hall. 



Thoracic segments of a large 7>^7o5^^e, probably Homcdonotus 

 DeKayi, Green. 



Rhynchonella Gongregata^ Conrad. 



Spirlfer sp. 



Niicula Randalli, Hall. 



498 H is about one mile south of Leonardsville, on the eastern side of 

 the Unadilla river, and in Brookfield, Madison Co. These layers, 

 commencing somewhat farther north than the village and extending 

 more than a mile along the eastern side of the hill, are composed of 

 coarse, arenaceous shales, which tend to pass into thin sandstones of 

 some little thickness and uniformity. At the place particularly 

 examined (498 H) there is an exposure of coarse shales and thin sand- 

 stones 20' in thickness, similar in lithologic appearance to those of 

 498 E, F and G on the opposite side of the river, and also to 498 A^, the 

 Upper exposure of Markham mountain at Unadilla Forks. The only 

 abundant fossil in these coarse shales is Grammy sia alveata^ Conrad. 

 The following fossils were collected: 



Gram^mysia alveata^ Conrad. Quite a large number of specimens 

 from the coarse, arenaceous shales. 



Rhynchonella congregata, Conrad (?). 



Rhynchonella Sappho, Hall (?). 



Spirifer mucronatus, Conrad. 



Ambocoelia umbonata, Conrad. 



Liopteria sp. Type of L. Rafinesqiiii, Hall, and L. DeKayi, Hall. 

 (See Pal. N. Y., vol. v, pt. I, pi. 20, figs. 1 and 17.) 



Several specimens belonging to the Pectenidm, but not perfect enough 

 to admit of certain identification. 



Tropidoleptus carinattis, Conrad. 



Spirophyton velum, Vanuxem. 



A single specimen of Crania or Orhiciiloidea. 



On a provisional list a fragment of a Trilohite, probably Homalo- 

 notus DeKayi, Green, is mentioned but, upon a re-examination of the 

 fauna the specimen has not been found. 



