3^° NEW YORK STATE MUSEUM 



2239 hypotype Hall. Paleontology of New York. 1883. 

 v. 5, pt 1, plates and explanations, pi. 7, fig. 17. 



Hall. Paleontology of New York. 1884. v. 5, pt 1, 

 pi. 7, fig. 17. 



Chemung (?) beds Conewango N. Y. 



C. Van Deloo, coll. 1863 



Aviculopecten celsus Hall 



2240 9 ° 1 54 type Aviculopecten celsus Hall. Paleontology 



of New York. 1883. v. 5, pt 1, plates and explanations, 

 pi. 7, fig. 29, 30. 



Hall, Paleontology of New York. 1884. v. 5, pt 1, 

 pi. 7, fig. 29,30. 



Chemung beds Salamanca, Cattaraugus co. N. Y. 



R. P. Whitfield, coll. 1869 



Aviculopecten cleon Hall 

 2 24 1 90 1 55 type Aviculopecten cleon Hall. Paleontology 

 of New York. 1883. v. 5, pt 1, plates and explanations, 

 pi. 1, fig. 1. 



Hall. Paleontology of New York. 1884. v. 5, pt 1, 

 pi. 1, fig. 1. 



Onondaga limestone Columbus O. 



R. P. Whitfield, coll. 1865 



Aviculopecten duplicatus Hall 



2242 utf* hypotype Pecten duplicatus Hall. Geology of 



New York; report on the 4th district. 1843. p. 264. 



Aviculopecten duplicatus Hall. Paleon- 

 tology of New York. 1883. v. 5, pt 1, plates and ex- 

 planations, pi. 7, fig. 6. 



Hall. Paleontology of New York. 1884. v. 5, pt 1, 

 pi. 7, fig. 6. 



Chemung (?) beds Conewango N. Y. 



C. Van Deloo, coll. 1863 



2243 ^f-S- hypotype Hall. Paleontology of New York. 1884. 



v. 5, pt 1, pi. 81, fig. 9. 



Chemung beds Mansfield, Tioga co. Pa. 



A. Sherwood, coll. 187 1 



2244 - 2 --/ i5 - hypotype Hall. Paleontology of New York. 1884. 



v. 5, pt 1, pi. 81, fig. 10. 



Chemung beds Mansfield Pa, 



A. Sherwood, coll. 1871 



