434 Whiteaves — Trenton rocks at Ungava, 



list of fossils from the trenton formation at akpatok island, 

 collected by dr. bell in 1897. 



Receptaculitid^e. 

 Receptacidites Oweni Hall. 



A very small and worn but fairly characteristic fragment. 



ZOANTHARIA. 



Streptelasma robustum Whiteaves. 

 About thirty specimens, of all sizes. 



Calapcecia Canadensis Billings. 



One specimen. 



Brachiopoda. 

 Rafinesquina lata Whiteaves. 



One ventral valve. 



Leptoena unieostata Meek and W T orthen. 



A tolerably well preserved ventral valve that is apparently 

 referable to this species. 



Pleetambonites sericea (Sowerby). 

 A few specimens. 



Orthis tricenaria Conrad. 

 An unusually large ventral valve. 



Orthis (Dinorthis) Meedsi, var. arctiea Schuchert. 



Three imperfect and badly preserved specimens which Mr. 

 Schuchert thinks look very much like Baffin Land specimens 

 that he is describing under this name. 



Orthis (Hebertella) bellarugosa Conrad. 



One good specimen that has been identitied with this species 

 by Mr. Schuchert. 



Orthis [Dalmanella) testudinaria Dalman. 

 A few imperfect specimens. 



Platystrophia biforata (Schlotheim). 

 Two imperfect ventral valves. 



f Rhynchotrema incequivalvis (Castelneau). 



An imperfect ventral valve, with the cardinal area not visible. 



Gasteropoda. 

 Troehonema or Pleurotomaria. (Speoies indeterminable.) 



A cast of the interior of the last volution and last but one. 

 Hormotoma. (Species indeterminable, but apparently like H. 

 Salter i Ulrich.) 



A cast of the interior of three of the volutions. 



Cephalopoda. 

 Gyrtoceras Manitobense Whiteaves. 



About thirty well preserved but much worn fragments, from 

 less than an inch to nearly two inches in length. 



Ottawa, March 23d, 1899. 



