404 



NEW YORK STATE MUSEUM 



Billings ell a festiuata Bill., 



Swauton Vt. 

 Scenella retusa Ford, Troy 

 Stenotheca rugosa ilall, Troy 

 Stenotheca rugosa Hall, Lan- 



singburg 

 H y o 1 i t h u s (sp.), Troy 

 H. americanus Bill., Troy 

 H. communis var. e m m o n s i 



Ford, Troy 

 H. i m p a r Ford, Troy 

 H. m i c a n s Bill., Troy 

 Fordilla troyensis Barr., Troy 

 Aristozoe troyensis Ford, 



Troy 

 B a t b y u r u s s e ii e c t u s Bill., Bic 



harbor Can. 

 Microdiscus speciosus Ford, 



Troy 

 Microdiscus speciosus Ford, 



Lansingburg 

 M. m e e k i Ford, Trov 

 M. 1 o b a t u s Hall, Troy 

 M. p u n c t a t u s ? Salter, St John 



N. B. 

 M. (sp.), Bic Harbor Can. 

 Olenellus asaphoides Em., 



Troy 

 O. asaphoides Em., Bald moun- 

 tain 

 O. a s a ji h o i d e s Em., Lansingburg 

 O. V e r m o n t a n a Hall, l*arker's 



farm, Vt. 

 O. thompsoni Hall, L'Ause-au- 



Loup Can. 

 P t y c h o p a' r i a leu <• e r Bill., J 



mile east of Swanton Vt. 



1 



(1 type) 



9 





1 





1 





29 





14 



(2 types) 



15 



(3 types) 



38 





5 



(5 hypotypes) 



(1 type) 



60 



(3 types) 



1 (1 type) 



7 



1 

 2 



80 (12 hypotypes) 



3 

 5 



