TYPE SPECIMENS OF PALEOZOIC FOSSILS 507 



Ptychopteria expansa Hall 



3118 * TYPE Pt y cho p te r i a e xp an sa Hall. Paleontology 



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

 pi. 23, fig. 10, IT. 



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

 pi. 23, fig. 10, ii. 



Chemung beds Smethport Pa. 



C. Van Deloo, coll. 1870 



Ptychopteria proto Hall 



3119 &&*- TYPE Ptychopteria proto Hall. Paleontology of 



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

 pi. 23, fig. 12. 



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

 pi. 23, fig. 12. 



Chemung beds Smethport Pa. 



C. Van Deloo, coll. 1870 



3120" * a sP TYPE Hall. Paleontology of New York. 1883. v. 5, pt i, 

 plates and explanations, pi. 23, fig. 14. 



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

 pi. 23, fig. 14. 



Chemung beds Smethport Pa. 



C. Van Deloo, coll. 1870 



Ptychopteria salamanca Hall 



3121 2 - s i ejL TYPE Ptychopteria salamanca Hall. Paleon- 



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

 explanations, pi. 23, fig. 17. 



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

 pi. 23, fig. 17. 



Chemung (?) beds Rock City, near Salamanca N, Y. 



R. P. Whitfield, coll. 1869 



3122 *** TYPE Hall. Paleontology of New York. 1883. v. 5, 



pt i, plates and explanations, pi. 23, fig. 18, 19. 



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

 pi. 23, fig. 18, 19. 



Chemung (?) beds Rock City, near Salamanca N.Y. 



R. P. Whitfield, coll. 1869 



3123 *** TYPE Hall. Paleontology of New York. 1883. v. 5, 



pt i, plates and explanations, pi. 23, fig. 20. 



