10 OLAF HOLTEDAHL. [SEC. ARCT. EXP. FRAM 



Srachiopoda. 



Rafinesquici deltoidea CONRAD. 



One or two fragmentary specimens.' 



Plectambonites sericea Sow. 



Orthis tricenaria CONRAD. 



Triplesia sp. 



One small fragment. 



Rhynchonotrema incequivalvis CASTELN. 



One whole specimen and several fragments. 



Gastropoda. 



Trochonema cf. umbilicatum HALL. 



One piece only, too fragmentary in character for any exact deter- 

 mination to be made. 



Cephalopoda. 



Gonioceros occidentale HALL. 



Several fragments which show beautifully the typical form of the 

 septa. The greatest diameter observed in one complete section was 

 11-12 cm. 



Trilobita. 



7 haleops ovata CONRAD. 

 Several typical headshields. 

 Nileus (Bumastus?) sp. 

 One fragmentary pygidium. 



Ostracoda. 



Leperditia fabulites CONR. 



Several right and left shells, well preserved. 



