352 PROCEEDINGS OP THE ACADEMY OF [June, 



be the two of a pair, or the two of one side, or the left of one and right of 

 the other pair. 



All of the specimens exhibit the great flaring wings so well shown in 

 Mcintosh's figure, and there is a distinct postbranchial fold across the 

 dorsum of IV. The cirri above and behind the setae bundles of VI and 

 VII are well developed. In respect to most of their characters the 

 uncini resemble Mcintosh's figure closer than those given by Maren- 

 zeller, but the former fails to show the guard. 



Although none of the specimens is complete, upwards of 100 seg- 

 ments are present, and even incomplete examples measure 160 mm. 

 long and 6 mm. wide across the thorax, being therefore much larger 

 than Marenzeller's specimen. The tube has a thick wall composed of 

 fine silt. The one from Station 4246 is filled with eggs. 



Stations 4225, Boca de Quadra, southeastern Alaska, 149-lSl 

 fathoms, dark green mud; 4229, vicinity of Naha Bay, Behm Canal, 

 198-256 fathoms, soft gray mud; 4230, same region, 108-240 fathoms, 

 rocky; 4237, vicinity of Yes Bay, Behm Canal, 192-198 fathoms, 

 green mud; 4246, Kasaan Bay, Prince of Wales Island, 101-123 

 fathoms, gray-green mud, coarse sand and shells. 



Laena nuda Moore. 



Lana nuda Moore, Proc. Acad. Nat. Sci. Phila., 1905, pp. 855, 856, PI. 

 XLIV, figs. 14, 15. 



Known only from the type specimen, a female filled with eggs and 

 preserved in a soft mucous tube coated with a thin layer of foreign 

 materials. It was taken at Station 4279, Kadiak Island, 29 fathoms, 

 dark gray mud. 



Thelepus hamatus Moore. 



Thelepus hamatus Moore, Proc. Acad. Nat. Sci. Pliila., 1905, pp. 856-858, 

 PI. XLIV, figs. 16-18. 



The type comes from Station 4235, Yes Ba,y, Behm Canal, 130-193 

 fathoms, green mud, and a second poorly preserved specimen from 

 Station 4227, Naha Bay, Behm Canal, 62-65 fathoms, dark green mud 

 and fine sand. 



Ataoama conifera Moore. 



Atacama conifera Moore, Proc. Acad. Nat. Sci. Phila., 1905, pp. 853-855, 

 Pl.XLIV, figs. 11-13. 



Type from Station 4194, Gulf of Georgia, 111-170 fathoms, bottom 

 of soft green mud. A second specimen comes from an unknown 

 station. 

 Terebellides strcemi Sars. 



TerebeUides straimii Sars, Beskrivelser og lagthagelser, etc., 1835, p. 48. 



The proper discrimination of the species of TerebeUides is still a 



