146 NATURAL HISTORY OF ARCTIC AMERICA. 



Buccinum tenebrosum, Hancock, (typical). 

 Buccinum gronlandicum, Cheinn. 



* Trophon truncatus, Strom. 

 Margarita umbilicalis, Brod. & Sby. 

 Margarita helicina, Fabr., vara. 

 Litorina gronlandica, Morch. 

 Acmcea tcstudinalis, Linne*. 

 Aeolidia papillosa, Linne. 



* Dendronotus reynoldsii, Couthouy. 

 Mya truncata, Linne'. 



* Gly timer is Kurriana, Dkr. On mud Sats. 

 tSaxicava arctica, Linne. 



*Astarte borealis, Gray ; attached to kelp. 



* Turtonia minuta, Fabr. ; in nest of Modiolaria. 

 Modiolaria Icevigata, Gray. 



Modiolaria discors, Linn6. 



Modiolaria (Crenella) faba, Fabr. 



Chiton (Tonicella) marmorea, Fabr. 



Rhynchonella psittacea, Fischer 5 dead broken valves, apparently dis- 

 gorged by some bird, were found on the hills at a considerable distance 

 from the sea. They are evidently not fossil, and are probably to be 

 ibuiid living in suitable places at low-water mark. 

 NOVEMBER S6, 1378. 



