Prosser — Hamilton and Chemung Series. 



1. Spirifer granulosus (Con.), Hall. (c) 



2. Spirifer mucronatus (Con.), Bill. (c) 



3. Spirifer TuUins, Hall. (it) 



4. Clionetes coronata (Con.), Hall. (c) 



5. Tropidoleptns carinatus (Con. ), Hall. (a) 



6. Stropheodonta demissa (Con.), Hall (?). (it) 



7. Orthothetes Chemungensis (Con.), Hall and Clarke, (it) 



8. Cyrtino Hamiltonensis, Hall. (it) 



9. Terebratula {Eunelld) Lincklaeni, Hall. (it) 



About opposite Milford village, the Cherry Valley creek enters the Sus- 

 quehanna river from the east. The top of the Hamilton follows the w estern 

 side of Crumhorn mountain, on the eastern side of Cherry Valley creek, to the 

 northeast into Westford township. In the brook southeast of Westville 

 village, 420 feet above it and five and one-quarter miles northeast of Milford 

 village, are bluish shales containing plenty of Hamilton fossils and belonging 

 to the Hamilton formation. The fauna is : 



1. 



Spirifer TuMius, Hall. 



(r) 



2. 



Spirifer mucronatus (Con.), Bill. 



(rr) 



3. 



Clionetes coronata (Con.), Hall. 



(IT) 



4. 



Clionetes scitlda, Hall. 



(rr) 



5. 



Ohonetes setigera, Hall. 



(rr) 



6. 



Amboccelia urnbonata (Con.), Hall. 



(rr; 



7. 



Crania Hamiltonice, Hall (J). 



(rr) 



8. 



jVucula hellistriata (Con.), Hall. 



(rr) 



9. 



G-rammysia {Splienoniyd) cuneata, Hall. 



(rr) 



In 



the upper part of the " Gulf," about one 



and one-half miles east of 



Westville, 560 feet above the village, are even shales and thin sandstones that 

 are apparently unfossiliferous and belong in the Sherburne formation. L< >< >se 

 specimens contain Tropidoleptus carinatus (Con.), Hall. The top of the hill 

 is some 900 feet above Westville village. 



XXV G x . The top of the Hamilton follows around the side of the 

 steep hill to the northeast of Westville, and is crossed by the hill road wind- 

 ing down the steep northeastern side toward Westford village, about two and 

 one-half miles from Westville. The upper part of the hill is composed of the 

 arenaceous shales and thin sandstones of the Sherburne formation ; but on the 

 road, 525 feet above the valley of Elk creek, two miles below Westford. are 

 bluish argillaceous shales which break into rather small pieces and contain 



