TYPE SPECIMENS OF PALEOZOIC FOSSILS 



Leptodesma propinquum Hall 



2589 type Leptodesma propinquum Hall. Paleon- 



tology of New York. 1884. v. 5, pt 1, p. 231, pi. 9 1, fig. 16. 

 Chemung beds Mansfield Pa. 



A. Sherwood, coll. 187 1 



Leptodesma quadratum Hall 



2590 type Leptodesma quadratum Hall. Paleon- 



tology of New York. 1884. v. 5, pt 1, p. 233, pi. 91, fig. 15. 

 Upper Chemung beds Lindley township, 



Steuben co. N. Y. 

 A. Sherwood, coll. 187 1 



Leptodesma robustum Hall 



2591 type Leptodesma robustum Hall. Paleontology 



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

 pi. 21. 



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

 pi. 89, fig. 8. 



Middle Chemung beds Painted Post, Steuben co. N. Y. 



Leptodesma rogersi Hall 



2592 9S 1 49 type Leptodesma rogersi Hall. Paleontology of 



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

 pi. 21, fig. 1. 



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

 pi. 21, fig. 1. 



Ithaca beds Norwich, Chenango co. N. Y. 



J. W. Hall and G. B. Simpson, coll. 1870 



2593 MM type Hall. Paleontology of New York. 1883. v. 5, 



pt 1, plates and explanations, pi. 21, fig. 2. 



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

 pi. 21, fig. 2. 



Ithaca beds Norwich N. Y. 



J. W. Hall and G. B. Simpson, coll. 1870 



2594 type Hall. Paleontology of New York. 1883. v. 5, 



pt 1, plates and explanations, pi. 21, fig. 3. 



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

 pi. 21, fig. 3. 



Ithaca beds Norwich N. Y. 



J. W. Hall and G. B. Simpson, coll. 1870 



