91 



Family Rhynchonellidoe. 

 Hemithyris psittacea (Gmelin). 



Annmia jmttacca, (Jinelin (1702). 

 RhynchoneUa psittacea, Owen (1835) ; et auct. 

 Hemithyris psittacea, Orbigny (1847). 

 Hypothyris psittacea. King (1850). 



Abundant and gregarious throughout the whole region, usually on a stony 

 or rocky bottom. In the Gulf and mouth of the River St. Lawrence it has 

 been taken at many localities, at depths of from about 10 to 50 or 60 

 fathoms, but on the Labrador coast it has been dredged in as shallow water 

 as one fathom. In 1 896, Mr. A. P. Low collected large and perfect valves 

 of it on the beach at Richmond Gulf, on the east coast of Hudson Bay. It 

 has long been known to be a circumpolar species, with a very wide distribu- 

 tion on both sides of the north .■Itlantic and Pacific. 



In eastern Canada //. psittacea has been found fossil in the Pleistocene of 

 Anticosti, Riviere du Loup, Beauport and Montreal ; also at Tertiary Bay, 

 Labrador, by Packard ; at Cape Hope (Drexler) and Mill Point, near Moose 

 Factory, James Bay, by Bell ; and at the Limestone Rapids of the Fawn 

 Branch of the Severn River, Keewatin, by Low in 1886. 



On page 1248 of the Appendix to Dr. Paul Fischer's " Manuel de Con- 

 chyliologie" Dr. CEhlert gives " Est du Canada " as one of the localities for 

 Cistella cistellula (Searles Wood), but does not state exactly where, when or 

 by whom, it was collected. He al-^o, on the same page, cites Labrador as a 

 locality for Atretia gnomon, though he subsequently states, on page 1308 of 

 the same volume, that Deslongchamps considers Atretia to be the fry of 

 RhynchoneUa (Hemithyris) psittacea. 



POLYZOA. 

 CHEILOSTOMATA. 

 Family Eucratiid 



GeMELLARIA LORICATA (L.) 



ScrtuJaria Joricata, L. (1758). 

 GcmeUaria loricata, Busk (1852). 

 (femellaria Willisii, Dawson (1865). 



"Very common in Casco Bay and Bay of Fundy, low-water to 110 fathoms" 

 (Verrill, 1873). Sable Island (G. Willisii) ; Sir J. W. Da.w son. Dredged 

 at many localities in the Gulf of St. Lawrence by the writer in 1871-73. It 

 occurs also on the coast of British Columbia, and is probably circumpolar. 



