TYPE SPECIMENS OF PALEOZOIC FOSSILS 419 



Leptodesma propinquum Hall 



2589 £^£ type Leptodesma propinquum Hall. Paleon- 



tology of New York. 1884. v. 5,pt 1, p. 231, pi. 91, fig. 16. 

 Chemung beds ■ Mansfield Pa. 



A. Sherwood, coll. 1871 



Leptodesma quadratum Hall 



2590 s^ai 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. 1871 



Leptodesma robustum Hall 



2591 s - 3 ^ s - 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 g8 j* 8 type Leptodesma rogersi Hall. Paleontology of 



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



pi. 21, fig. I, 



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. 1S70 



2 593 ' _•' ' 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 X. Y. 



J. W. Hall and (i. 15. Simpson, coll. 1870 

 2591 type Hall. Paleontology of New York. 1883. v. 5, 



pt 1, plates and explanations, pi. 21, fig, v ;. 



Hall. Paleontology Of New York. [884, V, 5, pi 1, 



pi. 21, fig. 3. 



Ithaca beds Norwich \ . Y 



J. \V. Hall and ('.. I 1 .. Simpson, coll. 1S70 



