124 BIOLOGICAL SURVEY OF 



Sertularella Gray 



S. POLYzoNiAS (Linne). (Nutting, 1904, p. 90, pi. 21, figs. 

 1, 2.) On various hard bottoms, from the shore to 220 feet. 

 Gonosomes found in July and August. Stations : D 6, 15, 

 20, 27, 31, 37, 38, 44, 52, 56, 60, 73, 86, 93, 94, 96; S 12, 14. 



S. EUGosA (Linne). Nutting, 1904, p. 82, pi. 17, figs. 1-5.) 

 A well-characterized species which may be safely determined 

 in the absence of gonosomes. On rock, shore to 80 feet. Sta- 

 tions: D94; S12. 



S. TRicuspiDATA (Aider). (Nutting, 1904, p. 100, pi. 25, figs. 

 3-7.) On rocks and shells, depth 30 to 239 feet. Gonosomes 

 present late in July and early in August. Stations : D 3, 15, 

 20, 35, 36, 39, 40, 44, 55, 60, 73, 86, 94, 103, 130. 



Abietinaria Kirchenpauer 



A. ABiETiNA (Linne). (Nutting, 1904, p. 114, pi. 32, figs. 

 1-3.) On hard bottoms, from the shore to 330 feet. Gono- 

 somes found August 3, 1927. Stations : D 20, 37, 51, 52, 60, 

 67-69; S29. 



Hydrallmania Hincks 



H. FALCATA (Linne). (Nutting, 1904, p. 124, pi. 38, figs. 1-4.) 

 Also on hard bottoms from shore to 239 feet. Gonosomes 

 found August 3, 1928. Stations: D 20, 31, 36-38, 43, 44, 

 49-52, 56, 68, 86, 90, 94, 103, 130; S 14. 



Thuiaria Fleming 



T. ARGENTEA (Liiinc). (Nutting, 1904, p. 71, pi. 12, figs. 3-9.) 

 Taken on hard bottoms, from shore to 239 feet. A common 

 species. Gonosomes found July 18, 1926. Stations : D 3, 10, 

 15, 18, 38, 39, 44, 55, 56, 73, 75, 80, 86, 87, 102-104, 130 ; S 12, 14. 



T. THUJA (Linne). (Nutting, 1904, p. 62, pi. 7, figs. 1-3.) 

 Taken on rock, depth 28 to 75 feet. Determination somewhat 

 doubtful owing to the absence of gonosomes. Stations: 

 D 30, 94. 



T. cupREssiNA (Linne). (Nutting, 1904, p. 72, pi. 13, figs. 

 1-3.) Taken on hard bottoms, depth 30 to 330 feet. Stations : 

 D 3, 5, 7, 67, 94. 



