TYPE SPECIMENS OF PALEOZOIC FOSSILS 155 



Escharopora ( P t il o d i c t y a ) tenuis? 

 Hall. 2d annual report of the New York state geologist. 

 1883. pi. 17, rig. 13. 



Ptilodictya nebulosa Hall & Simpson. Pale- 

 ontology of New York. 1887. v. 6, pi. 17, fig. 13. 



New Scotland beds Near Clarksville N. Y. 



C. D. Walcott and C. Van Deloo, coll. 1877 

 SS6 67 2 61 type Hall. 2d annual report of the New York state geolo- 

 gist. 1883. pi. 17, fig. 14, 15. 



Hall & Simpson. Paleontology of New York. 1887. 

 v. 6, pi. 17, fig. 14, 15. 



New Scotland beds Near Clarksville N. Y. 



L E. Brown and C. Van Deloo, coll. 1876 



887 6 7 3 9 1 type Hall. 2d annual report of the New York state geolo- 



gist. 1883. pi. 17, fig. 16. 



Hall & Simpson. Paleontology of New York. 1887, 

 v. 6, pi. 17, fig. 16 



New Scotland beds Near Clarksville N. Y. 



L. E. Brown and C. Van Deloo, coll. 1876 



888 iL ~ 1 type Paleschara ? foliata Hall. 2d annual report 



of the New York state geologist. 1883. pi. 17, fig. 18. 



Hall & Simpson. Paleontology of New York. 1887. 

 v. 6, pi. 17, fig. 18. 



New Scotland beds Near Clarksville N. Y. 



L. E. Brown and C. Van Deloo, coll. 1876 



Ptilodictya parallela Hall & Simpson 



889 SJLA2. type Ptilodictya parallela Hall & Simpson. 



Paleontology of New York. 1887. 6 : 270, pi. 61, fig. 7, 8. 

 Hamilton beds Fall brook, Ontario co. N. Y. 



Ptilodictya plumea Hall & Simpson 



890 6 \ 6 * type Ptilodictya plumea Hall & Simpson. Pale- 



ontology of New York. 1887. 6: 271, pi. 61, fig. 9-12. 

 Hamilton beds Hamburg-on-the-Lake N. Y. 



Ptilodictya retiformis Hall & Simpson 



891 + 7^* type Ptilodictya retiformis Hall & Simpson. 



Paleontology of New York. 1887. 6 : 272, pi. 61, fig. 13. 

 Hamilton beds Alden N. Y. 



