23O NEW YORK STATE MUSEUM 



13 66 ^p hypoplastotype Hall & Clarke. Paleontology of New- 



York. 1892. v. 8, pt 1, pi. 4B, fig. 16. 



Niagaran Near Le Claire la. 



1 3 6 7 j - a t sl hypoplastotype Hall & Clarke. Paleontology of New 



York. 1892. v. 8, pt 1, pi. 4B, fig. 17. 



Niagaran Near Le Claire la. 



1368 -2^P hypoplastotype Hall & Clarke. Paleontology of New 



York. 1892. v. 8, pt 1, pi. 4B, fig. 20. 

 Niagaran Near Le Claire la. 



13 6 9 -14JU) hypoplastotype Hall & Clarke. Paleontology of New- 



York. 1892. v. 8, pt 1, pi. 4B, fig. 21. 



Niagaran Near Le Claire la. 



D i s c i n a sp. ? see Orbiculoidea media var. 

 Discina alleghania see Orbiculoidea allegania 

 D i s c i n a d o r i a see Orbiculoidea doria 

 Discina grandis see Roemerella grandis 

 Discina lodensis^/? Orbiculoidea lodensis 

 Discina manhattanensis see Orbiculoidea man- 



hattanensis 



Discina marginalis see Orbiculoidea marginalis 

 Discina media see Orbiculoidea media 

 Discina neglecta see Orbiculoidea neglecta 

 Discina newberryi see Orbiculoidea newberryi 

 Discina randalli see Orbiculoidea randalli 

 Discina tullia see Orbiculoidea tullia 



discinopsis Matthew 

 Discinopsis gulielmi Matthew 

 137° ^^ hypoplastotype Aero tret a? gulielmi Matthew. 

 Transactions of the Royal society of Canada. 1886. 3 : 37. 

 Discinopsis gulielmi Hall & Clarke. Pale- 

 ontology of New York. 1892. v. 8, pt 1, pi. 3, fig. 22. 

 St John group Portland N. B.. 



douvillina Oehlert 

 Douvillina cayuta Hall 

 371 £^M> hypotype: hypoplastotype Strophodonta cayuta 

 Hall. Paleontology of New York. 1867. 4:110. 



Douvillina cayuta Hall & Clarke. Paleontology 

 of New York. 1892. v. 8, pt 1, pi. 15 B, fig. 7. 



Chemung beds Lawrenceville, Tioga co. Pa.. 



A. Sherwood, coll. 187 1 



