PART 5 A MONOGRAPH OF THE EXISTING CRENOIDS 587 



bottom temperature —1.36° C. ; loose brown mud, gray clay, and stones; August 31, 

 1930 [Gorbunow, 1933]. 



Sedow station 59; northern Kara Sea (lat. 80°47' N., long. 89°50' E.); 52 meters; 

 bottom temperature —1.48° C. ; presumably stones and lithothamnion; August 31, 

 1930 [Gorbunow, 1933]. 



Sedoiv station CO; nortlicrn Kara Sea (lat. 79°00' N., long. 87°04' E.); 180 metere; 

 loose broA\'n mud; September 1, 1930 [Gorbunow, 1933]. 



Sedow station 61; northern Kara Sea (lat. 78°31' N., long. 86°20' E.); 119 meters; 

 bottom temperature —1.82° C. ; very sandy brown mud and stones; September 2, 1930 

 [Gor])unow, 1933]. 



Sedow station 62; northern Kara Sea (lat. 78°02' N., long. 86°30' E.); 108 meters; 

 very sandy brown mud and stones; September 2, 1930 [Gorbunow, 1933]. 



Sedow station 68; northern Kara Sea (lat. 76°36' N., long. 74°48' E.); 157 meters; 

 loose bro^\Ti mud, stones, and mussels; September 4, 1930 [Gorbunow, 1933]. 



Lomonossow station 71; northern Kara Sea (lat. 77°32' N., long. 70°05' E.); 320 

 meters; bottom temperatiu-e —1.97° C; stones; September 2, 1931 [Gorbunow, 1933]. 



Lomonossow station 72; northern Kara Sea (lat. 77°48' N., long. 70°10' E.); 290 

 meters;bottom temperature —0.95° C.;graymud;September 2, 1931 [Gorbunow, 1933]. 



Lomonossow station 77; northern Kara Sea (lat. 78°08' N., long. 73°47' E.); 446 

 meters; bottom temperature —0.98° C; brown mud; September 6, 1931 [Gorbunow, 

 1933]. 



Lomonossow station 79; northern Kara Sea (lat. 77°39' N., long. 74°00' E.); 300 

 meters; bottom temperature —0.97° C; brown mud; September 7, 1931 [Gorbunow, 

 1933]. 



Arctic Ocean (fragments, U.S.N.M., 36190). 



North Atlantic Ocean [A. H. Clark, 1912] (2, Berl. M., 3082j. 



Erroneous locality. — Dr. T. Gislen gives the following record for tliis species: 

 "South of the Faro-Iceland ridge : A. H. Clark, 1923, 1317 M., +2.4° C. ;" but there is no 

 such record in the In(jolj report, the memoir to which reference is made. In his st,ti- 

 onymy he includes a citation to the Ingolf report, giving page 6 as the page upon which 

 this species is considered, whereas the account of the species is found on p. 8. 



These chscrepancies arose through the fact that Dr. Th. Mortensen sent to Dr. 

 Gislen the uncorrected proofs of the Ingolf report in which /nr/oZ/ station 46, west of the 

 Faroe Islands (lat. 61°32' N., long. 11°36' W.), 1317 meters, temperature +2.4° C, 

 was inadvertently included in the list of localities from wliich this species had been 

 obtained. This station was struck out in the proof, and before the final printing the 

 pagination was changed so that Poliometra prolixa appears on page 8 instead of on page 

 6 as given bj- Gislen. 



Geographical range. — Arctic regions; westward to Grinnell Land, southward lo the 

 vicinity of Godthaab, west Greenland (lat. 63°24' N.), Kangerdlugsuak, east Greenland 

 (lat. G8° N.), the vicinity of Jan Mayen, the cold deeps west, north, and east of Iceland, 

 the Faroe Channel, and Finmark, and eastward to the Kara Sea and just cast of Wilczek 

 Land. 



Bathymetrical range. — From 20 to 1960 meters. 



Thermal range.— From — 1 .97° C. to +2.00° C. (a record for —2.10° C. is doubtful) 

 (Schorj'gin, 1928, gives the range as up to +3° C); less than a quarter of the records 

 arc above 0° C. 



