12B Canadian Arctic Expedition, 1913-18 
Locatity.—Alaska: Grantley harbour. Station 20a, July 30, 1913. Sur- 
face. 
SYLLIDAE. 
Autolytus prismaticus (Fabricius). 
1780. Nereis prismatica Fasricius, Fauna Groenl., p. 302. 
—. Nereis bifrons Fasrictus, Ibid., p. 303 (Female). 
1874. Proceraea gracilis VERRILL, Amer. Journ. Sci., p. 132, pl. 5, f. 1. 
1883. ?Autolytus alexandri Levinsen, Vid. Meddel. Nat. Forh. 1882, p. 247. 
pl. 7, f. 10. 
1843. Polybostrichus longisetosus OpRstED, Groen]. Annul. Dorsibr., p. 182. 
1867. Autolytus incertus Matmcren, Annul. Polychet., 1867, p. 35, pl. 6, 
f. 40-40E. 
Both sexes of the pelagic stage are represented in the collection, the males 
by many specimens. A female taken at cape Smyth, Alaska, bears a large 
brood-sac which has broken open, allowing most of the eggs to escape. 
This is a characteristically arctic species previously known from about 
Greenland, the type-locality, the North American Atlantic coast as far south- 
ward as Maine (Casco bay, Eastport), and Spitzbergen. The present records 
carry the known range in the Arctic westward to Alaska and Bering sea. 
Locaitigs (all in surface).).—Off Alaska: Station 14 (latitude 54° 23’ N., 
longitude 164° 45’ W.) July 2, 1913. One small pelagic male. 
Bering sea, off Alaska. Station 17a and 170, c. (latitude 60° 9’ N., longitude 
167° 38’ W.) July 6, 1913. About twenty-five pelagic males. 
Off Alaska, Station 6b. (latitude 56° 26’ N., longitude 133° 0’ W.) 
Alaska: Cape Smyth, Station 57a. August 8, 1916. One pelagic female 
(Sacconereis) and one male (Polybostrichus). 
Alaska. Station 21d, e, f. (latitude 68° 48’ N., longitude 165° 10’ W.) 
August 16, 1913. Six pelagic males. 
Northwest Territories: Off Young point in Dolphin and Union strait. 
Station 50b. July 17, 1916. One large pelagic male. 
Autolytus alexandri Malmgren. 
1867. Autolytus alexandri Matmaren, Annul. Polychaet., p. 37 (156), pl. 7, 
f. 39-39n. (Female or Sacconereis.) 
1874. Stephanosyllis ornata Verrityt, Amer. Jour. Sci., 4, p. 1382. (Stem 
form). 
1874. Stephanosyllis picta VeRRILL, ibid., pl. 4, f.6. Also as nomen nudum in 
text, p. 43. (Stem form.) 
1864. Non Procerea picta EHLERS. Die Borstenwiirmer, p. 256. 
1881. Avutolytus alexandri VERRILL, Trans. Conn. Acad., 4, p. 294, pl. 12, 
fig. 8-84. (Male or Polybostrichus.) 
1892. ae ag verrilli, MARENZELLER, Zool. Jahrb., Syst., 6, p. 416, pl. 19, 
g. 4. 
This species is represented by two epitokous, or pelagic, males taken in 
the plankton net in Bering sea. It was previously known from off the coasts 
of Spitzbergen and Greenland and southward in the Atlantic to the shore of 
New England. 
Locatiry.—Alaska: Bering sea. Station 17a,b,c (latitude 60°9’N., 
longitude 167° 38’ W.) Surface. 
