6S6 NEW YORK STATE MUSEUM "• 



Eopolychaetus albaniensis gen. et spec. nov. 

 Tie- 



13 A specimen from the Rural cemeterv. Albany y. Y. x4 



Pontobdellopsis cometa gen. et spec. nov. 

 14-18 Specimens from the Eural cemetery, Albany X, Y. x3 



Tedmophorns cancellatus sp. n. 



All specimens from the upper Utlca shale of Green Island. Albany co, 

 N. Y. All enlarged. x3. 



19 Small short specimen, showing basal margin 



20 Surface sculpture of the same. x6 



21 Sperimen with perfect posterior part 



22 Partial cast, showing the impressions on both sides of the 



beak 



23 Valve with nearly equally strong concentric and vertical 



lines 



24 Largest specimen observed with somewhat different outline 



and stronger vertical lines 



25 Surface sculpture of the same. x6 



Plate 2 

 Ctenobolbina snbrotnnda sp. n. 



1 Right valve. xl7 



2 Ventral view of the same. xl7 



3 Another valve. xl7 



4 Ventral view of the same. xlT 



Originals of figures 1-4 are from middle Trenton shale of Port 

 Schuvler, Albanv co. X. Y. 



Ctenobolbina ciliata Emmons sp.. var. cornnta var. nov. 



5 Small left carapace. xl7 



6 Ctenobolbina ciliata. Larger right valve. xl7 

 From lower Utica shale at Mechanicsville, Saratoga co. X. Y» 



7 Ctenobolbina ciliata. Eight valve 



From the upper Utica shale of Gre^n Island, Albany co. N. Y. 

 xl7 



