94 NEW YORK STATE MUSEUM 



5521 -2-Ay^i«' TYPE Clarke. New York state museum memoir 6. 1903- 



pi. 5, fig.I2. 



Portage (Naples) beds Naples N. Y. 



J. M. Clarke, donor 



5522 -2-i^i" TYPE Clarke. New York state museum memoir 6, 1903. 



Portage (Naples) beds Ithaca, Tompkins co. N. Y. 

 J. W. Hall and C. Van Deloo, coll. 1866 



5523 -^-^" TYPE Clarke. New York state museum memoir 6. 1903. 



pi. 5, fig.14. 



Genesee shale Aurora, Cayuga lake, N. Y. 



J. W. Hall and C. Van Deloo, coll. 1867 



5524 -2-AoiCT TYPE Clarke. New York state museum memoir 6. 1903. 



pl.5, fig.i6. 



Genesee shale Aurora N. Y. 



J. W. Hall and C. Van Deloo, coll. 1867 



Pterochaenia perissa Clarke 



5525 --1--^ TYPE Pterochaenia perissa Clarke. New York 



state museum memoir 6. 1903. p.253, pi. 4, fig. 19. 

 Portage (Naples) beds Parrish gully, Naples N. Y. 



J. M. Clarke, donor 



Pterochaenia sinuosa Clarke 



5526 ^-^^^^ TYPE Pterochaenia sinuosa Clarke. New York 



state museum memoir 6. 1903. pi. 5, fig. 17. 

 Genesee shale (Genundewa limestone) 



Genundewa, Canandaigua lake, N. Y. 

 J. M. Clarke, donor 



5527 ■2-^2---'^ TYPE Clarke. New York state museum memoir 6. 1903. 



pi. 5, fig.18, 19. 



Genesee shale (Genundewa limestone) 



Genundewa N. Y. 

 J. M. Clarke, donor 



5528 -2-^3^^^ TYPE: PLASTOTYPE Clarke. New York state museum 



memoir 6, 1903. pi. 5, fig. 20, 21. 



Genesee shale (Genundewa limestone) 



Genundewa N. Y. 

 J. M. Clarke, donor 



