BENTHIC POLYCHAETOUS ANNELIDS — REISH 147 



Praxillella praetermissa (Malmgren) 



Praxilla praetermissa Malmgren, 1865, p. 191. 



Praxillella praeterrnissa. — Pettibone, 1954, p. 303, figs. 34b-f. — Uschakov, 1955, 

 p. 341.— Berkeley and Berkeley, 1956, p. 238.— Levenstein, 1960, p. 121. 



Material: Stations 5(1), 7(1), 21(1), 27(1), 34(1), 35(2), 40(1), 

 41B(1), 49(1), 50(1), 52(2), 58(1); Bering and Chukchi Seas; 

 variety of substrate types. 



Rhodine bitorqitata Moore 



Rhodine hitorquata Moore, 1923, pp. 223-225, pi. 18, fig. 30. — Berkeley and 

 Berkeley, 1952, pp. 52-53, figs. 107-108.— Hartman, 1961, p. 37. 



Material: Stations 29(2), 39(1), 40(3), 43(3), 52(2), 56(8), 

 57(3); variety of substrate types. 



Distribution: This species was known previously from Vancouver 

 Island to southern California. The discovery of R. hitorquata in the 

 Bering and Chukchi Seas extends its northern distribution. 



Family Oweniidae 



Myriochele heeri Malnigren 



Myriochele heeri Malmgren, 1867, p. 211.— Fauvel, 1927, pp. 204-205, fig. 71h- 

 m.— Berkeley and Berkeley, 1956, p. 238. 



Material: Stations 5(1), 26(2), 27(1), 28(3), 34(495), 35(971), 

 39(1), 43(189), 45(677), 46(7), 48(98), 50(501), 52(2), 53(10), 57(3); 

 Bering Sea; silts, fine and very fine sands. 



Distribution: Widely distributed throughout the colder waters of 

 the Northern Hemisphere. 



Family Sabellariidae 



Idanthyrsus ornamentatiis Chamberlin 



Idanthyrsus ornamentatus Chamberlin, 1919, pp. 262-263, pi. 3, figs. 2-5. — Hart- 

 man, 1944, p. 337, pi. 31, fig. 34. 



Material: Stations 42B(2), 49(3), 52(1), 57(4); Bering Sea; silts or 

 very fine sands. 



Remarks: Okuda (1938) regarded /. ornamentatus Chamberlin as 

 a synonym of /. armatiis. This viewpoint was followed by Pettibone 

 (1954) but not Hartman (1944). The present material from the 

 Bering and Chukchi Seas agrees with the account by Hartman. 

 Detailed comparisons of these two species from various localities are 

 warranted to determine whether or not one or two species are involved. 



Distribution: Given by Hartman (1948) as northern California to 

 Alaska. 



