41 6 NEW YORK STATE MUSEUM 



Hall. Paleontology of New York. 1884. v. 5, pt i r 

 pi. 2i, fig. 32; pi. 89, fig. 10. 



Chemung beds Portville N. Y. 



R. P. Whitfield, coll. 1869 



2570 type Hall. Paleontology of New York. 1884. v. 5, 



pt i 9 pi. 89, fig. n. 



Chemung beds Little Genesee, Allegany co. N. Y. 



C. Van Deloo, coll. 1863 



Leptodesma mytiliforme Hall 



257 1 type Leptodesma mytiliforme Hall. Paleon- 



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

 nations, pi. 25. 



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

 pi. 91, fig. 23. 



Upper Chemung beds Smethport Pa. 



C. Van Deloo, coll. 1870 



Leptodesma nereus Hall 



2572 i ^f iL type Leptodesma nereus Hall. Paleontology of 



New York. 1884. v. 5, pt 1, p 217, pi. 90, fig. 31. 

 Upper Chemung beds Canton, Bradford co. Pa. 



A. Sherwood, coll. 187 1 



2573 — 2~ TYPE Hall. Paleontology of New York. 1884. v. 5, 



pt 1, pi. 90, fig. 32. 



Chemung beds Mansfield Pa. 



A. Sherwood, coll. 187 1 



2574 — ^ type Hall. Paleontology of New York. 1884. v. 5, 



pt i, pi. 90, fig. 33. 



Upper Chemung beds Canton Pa. 



A. Sherwood, coll. 187 1 



Leptodesma orcus Hall 



2575 93 i 4p type Leptodesma orcus Hall. Paleontology of 



New York. 1884. v. 5, pt 1, p. 215, pi. 90, fig. 23. 

 Chemung beds Mansfield Pa. 



A. Sherwood, coll. 1871 



Leptodesma orodes Hall 



2576 - I V U type Leptodesma orodes Hall. Paleontology of 



New York. 1883. v. 5,pti, plates and explanations, 

 pi. 25, fig. 6. 



