1901.] 



NATURAL SCIENCES OF PHILADELPHIA. 



177 



Station 18 

 Station 21 

 Station 27 

 Station 29 

 mens. 



Station 45 

 Station 51 

 Station 52 



Foulke Fjord, 15-20 fathoms. 1 specimen. 

 Murchison Sound, 25 fathoms. 3 specimens. 

 Off Cape Chalon, 85 fathoms. 6 specimens. 

 Olriks Bay, lower narrows, 7-25 fathoms. 3 



speci- 



d specimens. 

 2 specimens. 

 5 specimens. 



Barden Bay, 10-40 fathoms. 



Robertson Bay, 35-40 fathoms. 



Robertson Bay, 5-15 fathoms. 

 The specimens vary in size from 5.5 mm. to 11 mm. disk- 

 diameter. In alcohol they have a blue-gray color. Arms are 

 usually marked with lighter transverse bars. According to 

 Lyman's description the side arm-plates do not meet above until 

 about the middle of the arm. I find that in the smaller specimens 

 the side arm -plates meet nearer the disk — at about the fifth to 

 tenth dorsal arm-plate. 



Distribution. — Arctic and Sub-Arctic, Circumpolar [(Ludwig): 

 North American coast as far south as Cape Cod, Greenland, Dis- 

 covery and Franklin Pierce Bays (Nares Ex.), Godhavn and Port 

 Foulke (Hayes Ex.); Assistance Bay, 0. fascieulata (Penny's 

 voyage); "NV^ellington Channel, north of England, Faroe Islands, 

 European Arctic Ocean. 



Range in depth, 5 to 18 meters. 



14. Ophiocten sericeum (Forbes). 



Opliiura sericea Forbes, Sutherland's Jour. Voyage Baffin's Bay, Vol. 



II, App., p. ccxv, 1852. 

 Ophiocten sericeum Ljungman, Tillag. Skan. Oph. of Kong. Akad., p. 



360, 1864. 

 Opliiocten kroyeri Liitken, Lyman, 111. Cat. Mns. Comp. Zool., No. 1, 



p. 53. 18G5. 



Stat 

 Stat 

 Stat 

 Stat: 

 Stat 

 Stat: 

 Stat 

 Stat 

 Stat: 

 Stat 

 specimens. 

 12 



on 12. Foulke Fjord, 35 fathoms. 12 specimens, 

 on 18. Foulke Fjord, 15-20 fathoms. 3 specimens, 

 on 21. Murchison Sound, 25 fathoms. 2 specimens, 

 on 27. Off Cape Chalon, 35 fathoms. 4 specimens, 

 on 34. Cape York, 10 fathoms. 4 specimens, 

 on 39. Granville Bay, 30-40 fathoms. 199 specimens, 

 on 40. Granville Bay, 20-30 fathoms. 53 specimens, 

 on 43. Barden Bay, 20-25 fathoms. 2 specimens, 

 on 45. Barden Bay, 10-40 fathoms. 10 specimens, 

 on 49. Olnks Bay, upper narrows, 15-20 fathoms. 



181 



