Prossee — Hamilton and Chemung Series. 



1 39 



tion which, on top of the high hill southwest of Smyrna village, is seven miles 

 northwest of this locality. The approximate altitude of the Smyrna locality 

 above sea level is 1,620 feet, and that at North Norwich is 1,158 feet, making 

 a dip of sixty-six feet per mile to the southeast between these two localities, 

 which is greater than had been given in previous estimates. 



XL C s . About one and one-half miles southwest of North Norwich, in 

 the edge of Plymouth township, is the Horace Wilkes quarry which, fifty 

 years ago, was worked under the name of the Harris quarry. It is about 412 

 feet above the railroad, or 1,417 feet A. T. The back of the quarry show s 

 about twenty- five feet of blue sandstones alternating with shales. A small 

 amount of the stone is quarried for flagging, but most of it for building pur- 

 poses. The sandstone contains specimens of Spvrophyton velum, Van., of large 

 size, and other fossils are common. The list is as follows : 



1. Spi/rifer mucronatus (Con.), Bill. (c) 



2. Atrypa reticularis (Linne), Dalm. (cc) 



3. IAorhynchus mesacostalis, Hall. (c) 



4. ( 'honetes scitula, Hall (?). (a) 



This species is abundant, but in the condition of impressions 

 which renders identification difficult. Some of the specimens 

 approach C. setigera, Hall, in form, though they are not so convex 

 near the umbo as those found at Ithaca. 



5. Chonetes lepida. Hall. (rr) 



6. Cyrtina Ha/miltonensis, Hall. (rr) 



7. Stropheodonta sp. (rr) 



Two imperfect impressions which are similar t<> 8. /» wpla /"/ 

 (Con.), Hall. 



8. Prqductella, sp.- (<■) 



9. Microdot) (Cypricardelld) bellistriatus (Con.), 



Hall, or M. tenuistriatus, Hall. (rr) 

 A single specimen that has the proportions of J/. bellist/riatus, 

 as well as those of the elongated form of Jf. tenuistriatus, Hall 

 (see plate 73, figure 28, Palaeontology of N. Y., Vol. V., Part I.). 

 It is impossible to determine whether the specimen has the tine 

 striae of M. tenuistriatus or the coarse striae of .]/. bellistriatus^ 



10. Paracyolas lirata, (Con.), Hall. (rr) 



11. Cimitaria recurva (Con.), Hall. (r) 



12. PalcBoneilo emarginata (Con.), Hall. (rr) 



13. GoniopJiora carmata (Con.), Hall (?). (r) 



