212 



Report or the State Geologist. 



7. Leptodesma Ttogersi, Hall. (r) 



8. Ldopieria DeKayi, Hall. (it) 



9. Bellerophon acutilira, Hall (?). (rr) 



The striae are coarser than those in the species represented in 

 the figures. 



XXII B z . The shales are more arenaceous than those of B 1 , alternating 

 with thin sandstones. The rocks are of bluish color, and fossils are rare, 



only three species being found : 



1. Tropidoleptus carinatm (Con.), Hall. (c) 



2. Spirifer mucronatms (Con.), Bill. (r) 



3. Spirifer TulMus, Hall. (c) 



XXII B*. Above the first fall is a rather thin, somewhat coarse-grained 

 sandstone, in which fossils are rare. In thin layers several specimens of 

 Zdorhynchus were found, though poorly preserved. As a rule, however, the 

 rocks are quite destitute of fossils. The fauna of B 3 is : 



1. IAxwhynchus mesacostalis, Hall. (r) 



2. Crania, sp. (c) 



Poorly preserved, possibly 0. Leord, Hall. 



3. {'.) Oryptonella Ehidora, Hall. (rr) 



A XII B A . Thin, blue-grey sandstones and arenaceous shales, which 

 contain numerous specimens of Spirifer mesastrialis, Hall ; Spi/rifer 

 m/ucronatus (Con.), Bill.; Tropidoleptus carinatms (Con.), Hall, and other 

 fossils. These sandstones are near the top of the hill, nearly 500 feet 

 above the level of the creek and are clearly in the Ithaca formation. The 

 fauna is : 



1. 



Spirifer mesastrialis, Hall. 



(a) 







Spirifer mucronatus (Con.), Bill. 



(<9 



3. 



Tropidoleptus carmatus (Con.), Hall. 



(«) 



4. 



Chonetes scitula, Hall. 



(a) 



5. 



Iih ipiclwnella {Camarotoechia) e.rimJa, Hall. 



(rr) 



6. 



Rhynchonella (Camarotoschia) Steven si, Hall. 



(r) 



7. 



Liorh i/iK-lnis luesavostalis, Hall. 



(rr) 



8. 



Xiiciihi hellistriata (Con.), Hall. 



(rr) 



9. 



Palaeoneilo const rieta ((Jon.), Hall. 



(rr) 



lo. Leptodesma Rogersi, Hall (0. 



(r) 



1 1. 



. [ctinopti ria, sp. 



(rr) 



