TYPE SPECIMENS OF PALEOZOIC FOSSILS 225 



J 3 2 9 - 5 <f- HYPOTYPE Hall & Clarke. Paleontology of New York, 

 1894. v. 8, pt 2, pi. 28, fig. 53. 



Hamilton beds Thedford Ont. 



Cyrtina triquetra Hall 



133 f A HYPOTYPE Cyrtia triquetra Hall. Geological survey 

 of Iowa. 1858. v. i, pt 2, p. 513. 



Cyrtina triquetra Hall & Clarke. Paleontology 

 of New York. 1894. v. 8, pt 2, pi. 28, fig. 34, 35. 



Hamilton beds Davenport la. 



Cyrtina umbonata Hall var. alpenensis Hall & Clarke 



1 33 1 ^-^i TYPE Cyrtina umbonata Hall var. alpenensis 



Hall & Clarke. Paleontology of New York. 1894. 

 v. 8, pt 2, p. 362, pi. 28, fig. 18. 



Hamilton beds Alpena Mich. 



1332 H TYPE Hall & Clarke. Paleontology of New York. 1894. 



v. 8, pt 2, pi. 28, fig. 19. 



Hamilton beds Alpena Mich. 



1333 -- TYp E Hall & Clarke. Paleontology of New York. 1894 



v. 8, pt 2, pi. 28, fig. 20. 



Hamilton beds 4-lpena Mich. 



Cyrtina varia Clarke 



T 334 73 i 96 TYPE : PLASTOTYPE Cyrtina varia Clarke. New York 

 state museum memoir 3. 1900. p. 49, pi. 6, fig. 15. 

 Oriskanian Becraft mountain, Hudson N. Y. 



1335 3-S^s. TYPE Clarke. New York state museum memoir 3. 1900. 



pi. 6, fig. 16-18. 



Oriskanian Becraft mountain, Hudson N. Y. 



1336 73 3 86 TYPE Clarke, New York state museum memoir 3. 1900. 



pi. 6, fig. 19. 



Oriskanian Becraft mountain, Hudson N. Y. 



J 337 - 2 i TYPE Clarke. New York state museum memoir 3. 1900. 

 pi. 6, fig. 20, 21. 



'Oriskanian Becraft mountain, Hudson N. Y. 



TYPE Clarke. New York state museum memoir 3. 1900. 

 pi. 6, fig. 22. 



Oriskanian Becraft mountain, Hudson N. Y, 



