292 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



Canu and Bassler placed the species questionably under Cyclicopora 

 Hincks, but in that genus the ovicell is closed by the operculum and 

 the axis of rotation of the operculum is at its middle; in g'lgantea the 

 point of attachment of the operculum is near the proximal end. While 

 the operculum is more elongate than in other species of Coleopora the 

 nature of the bordering and internal sclerites appear to ally it more 

 nearly to that genus, and the presence of a dorsal pore indicates the 

 family Petraliidae. 



Hancock Stations: 1296-41, 1300-41 and 1662-48, Santa Cruz Island, 

 1283-41 and 1284-41, Santa Rosa Island, 1268-41 and 1271-41, Anacapa 

 Island, 1130-41 off Laguna Beach, southern California; Santa Cruz 

 Bay, California, 36°57'00"N Lat. ; 1190, Cortez Bank, 32°20'00"N 

 Lat. ; Tepoca Bay, Sonora, Mexico, Gulf of California; San Benito 

 Islands, 28°12'05''N Lat., off the west coast of Lower California. The 

 known range is rather limited, from 36°57'N to 28°12'05"S, and 

 bathymetrically from 7 to 131 fms. 



Genus HIPPOPODINA Levinsen, 1909 



"The horizontal part of the distal wall is continued into an expansion 

 which forms a partial partition between the ooecium and the zooecium; 

 uniporous rosette plates; no peristome" (Levinsen, 1909:353). Geno- 

 type, Lepralia feegeensis Busk, 1884:144. 



Unfortunately Levinsen misunderstood the nature of the ovicell 

 which, though deeply embedded, is clearly hyperstomial (see Osburn, 

 1940:411 for details). The genus must stand as Levinsen indicated the 

 genotype. A peristome is present, sometimes rather conspicuous. 



Hippopodina feegeensis (Busk), 1884 

 Plate 31, figs. 6-8 



Lepralia feegeensis Busk, 1884:144. 

 Hippopodina feegeensis J Levinsen, 1909:353. 

 Cosciniopsis fallax Canu and Bassler, 1929:276. 

 Hippopodina feegeensis, Hastings, 1930:729. 

 Hippopodina feegeensis, Osburn, 1940 :412. 



Zoarium encrusting, rather thin. Zooecia moderately large, 0.65 to 

 0.90 mm long by 0.45 to 0.65 mm wide ; distinct and somewhat inflated ; 

 the frontal finely granulated, with numerous tremopores. The aperture 

 is moderately large, about 0.20 in either dimension, rounded distally, 

 straighter on the sides and on the proximal border, the poster nearly 

 as wide as the anter ; the triangular cardelles varying in size. The oper- 



