230 NEW YORK STATE MUSEUM 



1366 :LA g SL HYPOPLASTOTYPE Hall & Clarke. Paleontology of New- 



York. 1892. v. 8, pt i, pi. 46, fig. 16. 



Niagaran Near Le Claire la. 



1367 Z 4j HYPOPLASTOTYPE Hall & Clarke. Paleontology of New 



York. 1892. v. 8, pt i, pi. 46, fig. 17. 



Niagaran Near Le Claire la. 



1368 2 -^ a HYPOPLASTOTYPE Hall & Clarke. Paleontology of New 



York. 1892. v. 8, pt i, pi. 46, fig. 20. 



Niagaran Near Le Claire la. 



1369 74 5 2 HYPOPLASTOTYPE Hall & Clarke. Paleontology of New 



York. 1892. v. 8, pt i, pi. 46, fig. 21. 



Niagaran -; : Near Le Claire Ia^ 



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

 Discina alleghania see Orbiculoidea allegania 

 Discina doria see Orbiculoidea doria 

 Discina grandis see Roemerella grandis 

 Discina lodeusissee Orbiculoidea lodensis 

 Discina manhattanensis see Orbiculoidea man- 



hattanensis 



Discina marginalis see Orbiculoidea marginalis 

 Discina media see Orbiculoidea media 

 Discina neglecta sec Orbiculoidea neglecta 

 Discina newberryi see Orbiculoidea newberryi 

 Discina randalli see Orbiculoidea randalli 

 Discina tullia see Orbiculoidea tullia 



DISCINOPSIS Matthew 

 Discinopsis gulielmi Matthew 



1370 ^T 2 - - HYPOPLASTOTYPE Acrotreta? g u 1 i e 1 m i Matthew. 



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



Discinopsis gulielmi Hall & Clarke. Pale- 

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



St John group Portland N. B. 



DOUVILLINA Oehlert 



Douvillina cayuta Hall 



37 i 74 i 40 HYPOTYPE: HYPOPLASTOTYPE Strophodontacayuta 



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

 ,,... D ouvillina cay uta Hall & Clarke. Paleontology 



ot New York. 1892. v. 8, pt i, pi. 158, fig. 7. 



Chemung beds Lawrenceville, Tioga co. Pa^ 



A. Sherwood, coll. 1871 



