412 NEW YORK STATE MUSEUM 



Leptodesma extenuatum Hall 



2542 ^2.*- TYPE Leptodesma extenuatum Hall. Paleon- 



tology of New York. 1884. v. 5, pt i, p. 207, pi. 90, fig. 1 8. 

 Chemung beds Mansfield, Tiogaco. N. Y. 



A. Sherwood, coll. 1871 

 Leptodesma hector Hall 



2 543 -r^ TYPE Leptodesma hector Hall. Paleontology of 



New York. 1884. v. 5, pt i, p. 209, pi. 90, fig. 19. 

 Upper Chemung beds Canton, Bradford cc. Pa. 



A. Sherwood, coll. 1871. 



2544 a^- 5 - TYPE Hall. Paleontology of New York. 1884. v. 5,. 



pt i, pi. 90, fig. 20. 



Upper Chemung beds Canton Pa. 



A. Sherwood, coll. 1871 

 Leptodesma jason Hall 



2 545 ^~-~ TYPE Leptodesma jason Hall. Paleontology of 



New York. 1884. v. 5, pt i, p. 213, pi. 91, fig. 4. 



Chemung beds Canton Pa. 



A. Sherwood, coll. 1871 



2546 -24P TYPE Hall. Paleontology of New York. 1884. v. 5, 



pt i, pi. 91, fig. 5. 



Upper Chemung beds Seeley creek, Tioga co. Pa. 



A. Sherwood, coll. 1871 



2547 ^3 TYPE Hall. Paleontology of New York. 1884. v. 5, 



pt i, pi. 91, fig. 6. 



Upper Chemung beds Seeley creek, Pa. 



A. Sherwood, coll. 1871 



Leptodesma lepidum Hall 



2548 &2gJ- TYPE Leptodesma lepidum Hall. Paleontology 



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

 pi. 21. 



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

 pi. 89, fig. 1 6. 



Chemung beds Mansfield N. Y. 



A. Sherwood, coll. 1871 



Leptodesma lesleyi Hall 



2 549 -^^r- TYPE Leptodesma lesleyi Hall. Paleontology 



of New York. 1884. v. 5, pt i, p. 223, pi. 91, fig. 7. 

 Upper Chemung beds Auburn township, Susque- 



hanna co. Pa. 

 A. Sherwood, coll. 1871 



