566 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iob 



Distribution: Widely distributed in the Arctic. Also Iceland, 

 Norway to France, Adriatic, Gulf of Oman; Labrador to Long 

 Island Sound; Bering Sea to central California; north Japan Sea to 

 Japan; New Zealand, Magellan Straits, South Georgia, Prince Ed- 

 ward Islands, Kerguelen. In low water to 1,333 fathoms; epitokes 

 at surface. 



Genus Polyphysia Quatrefages, 1865 



Polyphysia crassa (Oersted, 1843) 



Eumenia crassa Verrill, 1881, pp. 298, 304, 311.— Fauvel, 1927, p. 127, fig. 45,i-k.— 

 Zatsepin, 1948, p. 136, pi. 33, fig. 9.— Wesenberg-Lund, 1950a, p. 37; 1950b, 

 p. 88; 1951, p. 81; 1953, p. 71. 



Scalibregma infiatum Moore, 1909b, p. 143; not S. inflatum Rathke, 1843. 



Polyphysia crassa St0p-Bowitz, 1946a, p. 75, figs. 4-6; 1948b, p. 29, fig. 10. 



Description: Branchiae 4 pairs (or 6?), arborescent, on setigers 

 2-5, first ones smaller, last ones larger (j^oung without branchiae or 

 small single lobes) . 



New records: East Coast North America: Off Nova Scotia, 

 Maine, Massachusetts, 56-110 fms., U. S. Fish Commission (identi- 

 fied b}'- Verrill) . 



Distribution: Widely distributed in the Arctic: Siberian Arctic, 

 Greenland, Spitsbergen, Novaya Zemlya, Kara Sea. Also Iceland, 

 Norway to England, Mediterranean; Gulf of St. Lawrence to Massa- 

 chusetts. In 47 to 1,254 fathoms. 



Family Opheliidae 



Key to the genera of Opheliidae from Labrador 



1. Body rounded, cylindrical, grub-shaped, without ventral groove. Pygidium 

 small, cylindrical, longitudinally furrowed. With paired lateral cirriform 



branchiae Travisia 



Body rounded anteriorly on anterior half or third, with a deep ventral and 

 two lateral grooves on posterior part. Pygidium with papillae — 2 larger 

 ventral ones and a dorsolateral circlet of smaller ones. With paired lateral 

 straplike branchiae (except on first 8-11 and few terminal segments), 



Ophelia 

 Genus 2'ravisia Johnston, 1840 



Travisin forbesii Johnston, 1840 



Travisia forbesii Malmgren, 1867, p. 75. — Not Murdoch, 1885, p. 154 {= Travisia 

 carjiea) .—Chamberlin, 1920, p. 20.— Fauvel, 1927, p. 1:38, fig. 48,g-k.— 

 Annenkova, 1938, p. 188.— Berkeley and Berkeley, 1942, p. 198.— St0p- 

 Bowitz, 1946b, p. 26, fig. 1; 1948b, p. 10, fig. 2.— Zatsepin, 1948, p. 137, 

 pi. 33, fig. 6.— Wesenberg-Lund, 1950a, p. 38; 1950b, p. 90; 1951, p. 82; 

 1953, p. 71. 



Description: Segments 23-26. With conspicuous lateral lobes on 

 two fleshy eminences on each side of posterior 9-11 segments, up to 

 last segment (only one posterior segment without) . 



