682 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



Grisia maxima Robertson, 1910 



Plate 72, fig. 3 



Crista maxima Robertson, 1910:243. 



Crisia maxima, O'Donoghue, 1923:7, 1926:18. 



Zoarfum coarse, stiff, with straight, long internodes, resembling C. 

 serrulate in its manner of growth, but coarser and larger, occasionally 

 more than 50 mm in height. The internodes are elongate, usually with 

 from 12 to 20 zooecia but may contain more than 40 ; older joints dark 

 brown; basis rami not wedged in between the zooecia. The zooecia are 

 closely connate to their tips, which are turned sharply forward ; the 

 distance between their apertures is greater than in serrulata, usually dis- 

 tinctly greater than the internodal width. The front of the internode is 

 slightly arcuate in cross-section and not keeled. 



The ovicell is large, the frontal surface prominent, the distal end 

 more or less truncate; the tube of the ooeciostome is short, straight, 

 slightly tapered and opens more or less ventrally. 



Recorded by Robertson on the southern coast of California from be- 

 tween tide marks at Escondido, Deadmans Island (San Pedro), and 

 White's Point, and dredged from San Pedro to Coronado Island down 

 to 40 fms. O'Donoghue lists it from several British Columbia localities 

 down to 25 fms. 



Hancock Stations: 31-33 and 362-35, Hood Island, Galapagos, 1°22' 

 S^'S, 89°39'15''W, at 4 to 20 fms (the most southerly record) ; also 

 at 352-35, Chatham Island, 35 fms; and 810-38, Barrington Island, 48 

 fms, Galapagos. Station 1051-40, Angel de la Guardia Island, Gulf of 

 California, 21 fms; 870-38, Isabel Island, west of Mexico, 10-15 fms; 

 and 894-38, San Miguel Island, 5-15 fms, 1238-47, San Clemente 

 Island, 14 fms, and 1232-47, off San Pedro, 18 fms, southern California. 

 Also off Pescadero Point, near Monterey Bay, California (A. E. Blagg, 

 collector) . 



Grisia eburnea (Linnaeus), 1758 

 Plate 71, fig. 10 



Sertularia eburnea Linnaeus, 1758:810. 

 Crisia eburnea, Hincks, 1880:420; 1884:203. 

 Crisia eburnea, Osburn, 1912:215; 1923 :5D. 



Zoarium forming dense bushy tufts, the branches characteristically 

 curved forward. The internodes are short, usually 5 to 7 zooecia, the 

 joints yellow, sometimes dark near the base. Zooecia almost entirely 

 connate, the short free portions nearly at a right angle to the tubules. 



