Polychaeta 2783 
This species suggests C. dunert Malmgren in the form of the abdominal 
uncini; but the beak is proportionately longer and less divergent and the body 
of the uncinus much narrower below, more uniform. The spatulate thoracic 
sete are somewhat similarly asymmetrical but the mucron is much more diver- 
gent from the axis as shown in the figure. The species seems conspicuously 
different from dwneri in the characters of the branchie, which are united much 
farther distad, with the free apical region proportionately much broader, widely 
winged, and the tip free from barbs much shorter. In this respect the form 
approaches the Alaskan C. gracilis Moore, though the free tips of the branchie 
in the latter are also longer. In gracilis the collar is notched ventrally, whereas 
in the present species it is there weakly angulate. The spatulate sete of gracilis 
are symmetrical, or nearly so, instead of strongly asymmetrical. The beak of 
the crochets is more elevated, making a greater angle with the axis. And the 
abdominal uncini are different, the beak being more divergent and the body 
proportionately wider and more strongly curved. Moore (1898) has recorded 
as Chone sp. a caudal fragment from Egg harbour, Labrador, which is quite 
possibly the present species. At least it would seem to have uncini very similar 
to those of ungavana. 
Euchone analis (Kréyer). 
1856. Sabella analis Kroyer, Danske Vid. Selsk. Forh., p. 17. 
1865. Euchone analis Matmaren, Ofvers. af Vet. Akad. Forh., p. 466, pl. 28, 
f. 88-88G. 
Locatity.—Northwest Territories: Bernard harbour, outer part. Station 
41c. July 28, 1915. Depth, about 3 fathoms. Bottom, gray mud with 
Laminaria, etc. Many tubes, in part with animals in situ. ‘Had dark ercss- 
bands on the otherwise pale tentacles” (Johansen’s field-notes). 
A common arctic form of circumpolar distribution, being known from 
Bering sea, Davis strait, Greenland, Spitzbergen, etc. 
SERPULIDAE. 
Serpula vermicularis Linné. 
1767. Serpula vermicularis Linné, Syst. Nat., ed. 12, p. 1266. 
1863. Serpula Philippi Morcu, Naturh, Tidsskr., ser. 3, 54, p. 381. 
1838. Serpula fascicularis Lamarck, Hist. Nat. An. s. Vert., ed. 2, 5, p. 618. 
1817. Serpula contortuplicata Savieny (nec Linné), Syst. Annel., p. 73. 
1864. Serpula Jukesii Barrp, Journ. Linn. Soc., 8, p. 20. 
——. Serpula zelandica Bair, ibid., p. 21. 
1865. Serpula antarctica QuaTREFAGES, Hist. Nat. Annel., 2, p. 503. 
1884. Serpula granulosa MaRENzELLER, Denks. Akad. Wiss. Wien., p. 19, 
1. 4, f. 1. 
1885. Semi vasifera HaswELL, Proc. Linn. Soc. N.S. Wales, 9. p. 688, pl. 31, 
f. 1, pl. 32, f. 6-8. 
1901. co columbiana Jounson, Proc. Bost. Soc. Nat. Hist., 19, p. 4382, 
pl. 19, f. 199-204. a 
1902. Serpula narconensis Coun, Semon’s Forschungsreise in Austral. u. 
dem Malayenarchipel. Polychet., p. 100. 
Locatitizs.—British Columbia: Departure bay, 1909-10. W. Spread- 
borough, collector. A large cluster of tubes. 
British Columbia: Savary island beach. May 22, 1914. W. Taylor, 
collector. A cluster of tubes. __ 
British Columbia: Port Simpson. Beach. Winter, 1914-15 C. M. 
Barbeau, collector. Parts of two tubes probablv this species. On them are 
