488 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



usually well above the border of the peristome. The primary aperture 

 at the bottom of the tube is nearly round, 0.13 by 0.13 mm. 



The ovicell is borne well above the base of the peristome on the 

 distal side, the finely perforated area broadly lunate. 



Described by Hincks from the Queen Charlotte Islands and recorded 

 by O'Donoghue from numerous British Columbia localities. Robertson 

 recorded it from Catalina Island, and Canu and Bassler from the Pleisto- 

 cene of San Pedro, California. Hastings recorded it from the Galapagos 

 Islands. 



Hancock Station, 270, Angel de la Guardia Island, and Albatross 

 Sta. 3005, Gulf of California; otherwise only off southern California at 

 16 stations; shore to 60 fms. There is also a specimen from Humpback 

 Bay, Alaska (U. S. "Stranger," 1937, W. Williams). 



Lagenipora socialis Hincks, 1877 

 Plate 60, figs. 3-4 



Lagenipora socialis Hincks, 1877:215. 



Lagenipora socialis, O'Donoghue, 1923 :33 ; 1926:74. 



Zoarium forming small irregular patches, often on stems. The zooecia 

 are disposed irregularly, lageniform, inflated and coarsely punctured, 

 0.40 to 0.55 mm long by 0.35 mm wide. The peristomial tubes are nearly 

 erect, much shorter than in spinulosa and wider, costate; the aperture 

 flared, especially the high proximal lip which is somewhat pointed; the 

 distal border is slightly lower and may be smooth or bear a few short 

 processes. On either side is an avicularium with a pointed mandible, 

 a little larger than is usual in the genus. 



The ovicell is borne high above the base on the distal side, conspicuous, 

 its perforated area varying from semicircular to a more or less transverse 

 band. 



The zooecia are more erect than in the other species, the primary 

 aperture is ovate, 0.14 mm long by 0.12 mm wide, and in the fertile 

 zooecia the proximal border of the ovicell is often extended to some degree 

 over the peristomial aperture. 



Described by Hincks from England. O'Donoghue recorded it from 

 numerous British Columbia localities, but it has not otherwise been 

 noticed on this coast. 



Hancock Stations: 1219-40, San Nicholas Island, and 1284-41, Santa 

 Rosa Island, southern California, 16 to 22 fms; and 126-33, Santa 

 Maria Bay, Lower California, 3 to 25 fms. The writer also has specimens 

 from Departure Bay and Queen Charlotte Sound, British Columbia. 



