104 TRANSACTIONS OF THE 



186 ; Green's Monog. p. 68 ; Monthly American Jour- 

 nal, p. 560. 



I. Cyclops, Green. 

 Locality. New York? Green's Monog. p. 69, fig. 7. 



h megalops, Green. 



Locality. Trenton Falls; New York. Green's 

 Monog. p. 70. 



I. stegops, Green. 



Locality. Newport, Kentucky. Green's Monog. 

 p. 71. 



Genus Cryptolithus, Green. 



C. tessellatus, Green. 



Localities. Glenn's Falls ; Trenton Falls; New York. 

 Green's Monog. p. 73, fig. iv 5 Month. American Jour- 

 nal, p. 560. 



C. Bigsbii, Green. 

 Nuttainia Concentrica ? Eaton. 



Localities. Montreal 5 Trenton Falls 5 Champlain 

 canal ; New York. Green's Monog. p. 76. 



Genus Dipleura, Green. 



D. Dekayi, Green. 



Localities. Lockport, New York, and several other 



