Annelids of Alaska— HARTMAN 
47 
Schizobranchia dubia Bush 
Schizobranchia dubia Bush, 1904: 208-209, pi. 
28, fig. 1, pi. 29, fig. 1, pi. 33, fig. 7, pi. 36, 
fig. 1-3, 17-20, pi. 37, fig. 28; Hartman, 
1942: 83-84. 
Collections. Stations20-40to22-40 (many); 
24-40 (many); 51-40 (many); 52-40 (tubes 
only); 61-40 (many); 108-40 (many); C 150— 
41 (many). 
In most instances there are many tubes clus¬ 
tered together; they are interwoven but not 
connected to one another at their bases. The 
tubes have a strong, tough chitinized base and 
are usually covered on the outside, especially 
distally, with fine, dark-colored sand grains. 
Thoracic setigerous segments usually number 
only six, though rarely seven or five. Tentacular 
radioles are bifurcated once or twice, or rarely 
three times. 
This species was originally described from 
Alaska; the present collections are from Canoe 
Bay in 15 to 125 fm., Cold Bay in 15 to 30 
fm., Alitak Bay on the reef, and off Moffet Point 
in 60 fm. 
Genus Myxicola Koch 
Myxicola infundibulum (Montagu) 
Amphitrite infundibulum Montagu, 1808: 109- 
110, pi. 8. 
Myxicola pacifica Johnson, 1901: 431-432, pi. 
19, fig. 193-198. 
Myxicola conjunct a Bush, 1904: 217-218, pi. 
26, fig. 1, 4, pi. 38, fig. 1-11. 
Myxicola infundibulum Hartman, 1938^: 19, 
pi. 1, fig. 5-11, pi. 2, fig. 1; Hartman, 1942: 
86 . 
Collections. Stations 12-40 (1); D 11-41 
( 1 ). 
This cosmopolitan species has been reported 
from Alaska (see synonymy above). The pres¬ 
ent collections are from Canoe Bay, shore, and 
east of Walrus Island, Bering Sea, in 31 to 
33 fm. 
Genus Chone Kroyer 
Chone sp. 
Collections. Stations 36a-40 (1); 108-40 
( 1 ). 
Two tiny individuals, measuring less than 
10 mm. long, whose specific identity has not 
been determined, come from Pavlof Bay in 
27 fm. and Alitak Bay, reef. 
Family SERPULIDAE 
Genus Serpula Linnaeus 
Serpula vermicularis Linnaeus 
Serpula vermicularis Linnaeus, 1767: 1267; 
Chamberlin, 1919: 269; Berkeley, 1930: 73; 
Berkeley, 1932 a: 316; Hartman, 1942: 16; 
Berkeley, 1942: 206. 
Serpula Columbiana Johnson, 1901: 432-433, 
pi. 19, fig. 199-204. 
Serpula splendens Bush, 1904: 230-232, pi. 
24, fig. 3, pi. 29, fig. 2, pi. 30, fig. 2, 3, 
pi. 33, fig. 31, pi. 35, fig. 18, pi. 37, fig. 31, 
pl. 39, fig. 33. 
Collection. Seldovia (1). 
This species is well known from the northeast 
Pacific, including Alaska. 
Genus CRUCIGERA Benedict 
Crucigera zygophora (Johnson) 
Serpula zygophora Johnson, 1901: 433-434, pl. 
19, fig. 205-208. 
Crucigera zygophora Bush, 1904: 233, pl. 29, 
fig. 5, pl. 31, fig. 2, pl. 33, fig. 3, pl. 39, fig. 
8-13, 15, 17, 20; Berkeley, 1942: 207; Hart¬ 
man, 1942: 87-88. 
Crucigera formosa Bush, 1904: 233-234, pl. 
28, fig. 3, 4, pl. 31, fig. 1, pl. 33, fig. 4, pl. 39, 
fig. 6, 7, 10, 11, 14. 
Collections. Stations 12-40 (12 and tube 
clump); 13-40 (1); 21-40 (1+), 20-40 to 
22-40 (clump); 24-40 (1); 70-40 (several); 
82-40 (clump); 109-40 (clump); C 160- 
