50 CANADIAN PERIOD. 



CHAPTER IV. 



CANADIAN PERIOD. 



PROTOZOA. 



Class RHIZOPODA. 



Order FOEAMINIFERA. 



Genus RECEPTACULITES Defrance, 1827. 

 Receptaculites (?). 



The collections contain a single fragment only of one of these strange 

 and interesting foiins. It is too imperfect for specific characterization, but 

 is noticed here to make the account as complete as possible of the faunal 

 characteristics of the strata which I have referred to the Canadian period. 

 It seems to be a fragment from near the base of one of those broa,d sac- or 

 um-shaped species such as have been described by Mr. Billings from strata of 

 the same period in Canada. Both ectorhin and endorhin have been mostly 

 removed by weathering, whereby the open ends of the numerous close-set 

 cylindi-ical tubes that connected them are exposed. 



Position and locality. — Strata of the age of the Quebec group of Canada; 

 Fish Spring, House range, Utah. 



