4 JAMES A. GRIEG. [SEC. ARCT. EXP. FRAM 
to occur in the waters North and West of Baffin Bay: crenella faba, 
tellina torelli, tellina moesta, tellina lovent, thracia truncata, thracia 
septentrionalis, pandora glacialis, pilidium radiatum, bela harpu- 
laria, trichotropis conica, dendronotus frondosus. 
It is with sincere pleasure that I here acknowledge the obligation 
I am under to Mr. Herman Frieve for his valuable advice and help 
during the composition of this work. Not least of all am I indebted to 
him for the liberality with which he has placed at my disposal his rich 
collection of arctic molluscs. I am also deeply indebted to Dr. An. S. 
Jensen for his kindness in looking through the material collected by the 
expedition belonging to the genus tellina. 
