TYPE SPECIMENS OF PALEOZOIC FOSSILS 417 



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

 pi. 25, fig. 6. 



Upper Chemung beds On road from Olean N. Y. to 



Smethport Pa. 

 C. Van Deloo, coll. 1870 



2577 "tf 1 type Hall. Paleontology of New York. 1883. v. 5, 



pt 1, plates and explanations, pi. 25, fig. 9. 



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

 pi. 25, fig. 9 ; pi. 90, fig. 8. 



Chemung beds On road from Olean N. Y. to 



Smethport Pa. 

 C. Van Deloo, coll. 1870 



2578 ^ ; 1JL type? ? Hall. Paleontology of New York. 1883. v. 5, 



pt 1, plates and explanations, pi. 25, fig. 10. 



? Hall. Paleontology of New York. 1884. v. 5, 

 pt 1, pi. 25, fig. 10. 



Chemung beds On road from Olean N. Y. to 



Smethport Pa. 

 C. Van Deloo, coll. 1870 



Leptodesma orus Hall 



2 579 --f- 3 - type Leptodesma orus Hall. Paleontology of 



New York. 1884. v. 5, pt 1, p. 219, pi. 90, fig. 30. 

 Chemung beds Mansfield, Tioga co. Pa. 



A. Sherwood, coll. 187 1 



Leptodesma patulum Hall 



2580 9 y g type Leptodesma patulum Hall. Paleontology 



of New York. 1884. v. 5, pt 1, p. 226, pi. 91, fig. 10. 

 Upper Chemung beds Mansfield Pa. 



A. Sherwood, coll. 1 



Leptodesma potens Hall 



2581 '■• \ i± type Leptodesma potens Hall. Paleontology of 



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



pi. 2 1, fig. 21. 



Hall. Paleontology of New York. [884. v. 5, pt i, 

 pl. 21, I 



Upper Chemung beds 1 ast Randolph, 



( lattaraugus co. S. Y\ 



( . Van Deloo, < Oil, 1 



