260 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 4 



San Eugenio Point, 21-24 fathoms; 3 miles NW of Natividad Island, 

 30-31 fathoms; San Lorenzo Channel, Gulf of California, 3-5 fathoms; 

 Ballenas Bay, Espiritu Santo Island, shore; north of Isla Partida, 75 

 fathoms; east of San Francisco Island, 47 fathoms; off Isabel Island, 

 Mexico, 10-15 fathoms. 



Remarks. — The prominence of the teeth on the margin of the hydro- 

 theca in this species is quite variable. In the original description the num- 

 ber of teeth was given as 8, as the median tooth was so small in the speci- 

 men described that it was overlooked. It is never prominent, but in some 

 specimens it shows up definitely. The other teeth may be somewhat simi- 

 larly reduced so that the margin becomes a mere wavy line. In the original 

 description, "Two intrathecal ridges well marked," should, of course, 

 read "Two internodal ridges." The intrathecal septum is well marked 

 and may reach all the way across the hydrotheca. 



Aglaophenia pluma (Linn.) 

 Sertidaria Fluma Linnaeus, Syst. Nat., 1767, p. 1309. 

 Aglaophenia plumaYviAS^Vi, Hj^d. Pacific Coast, 1937, p. 179. 



Distribution. — ^ mile south of Cat Rock, Anacapa Island, 23-25 

 fathoms; Tanner Bank, 37-40 fathoms. 



Aglaophenia prominens Eraser 

 Aglaophenia prominens Eraser, Hancock Hyd., 3, 1938, p. 142. 



Distribution. — 1 mile south of Point Bennett, San Miguel Island, 

 45-46 fathoms; 2^ miles east of South Point, Santa Rosa Island, 23-28 

 fathoms; 2^ miles east of South Point, 17-18 fathoms; 3 miles east of 

 South Point, 1 7-20 fathoms ; east of Smugglers Cove, Santa Cruz Island, 

 19-20 fathoms; 4^ miles east of Coronado Islands, Mexico, 14 fathoms. 



Aglaophenia propinqua Eraser 

 Aglaophenia propinqua Eraser, Hancock Hyd., 2, 1938, p. 114. 



Distribution. — Agua Verde Bay, Gulf of California, shore and 10 

 fathoms; Ensenada de San Erancisco, 15-18 fathoms. 



Aglaophenia struthionides (Murray) 

 Plumularia struthionides yiuKKAY, Ann. and Mag. Nat. Hist., (3), V, 



1860, p. 114. 

 Aglaophenia struthionides Eraser, Hyd. Pacific Coast, 1937, p. 180. 



Eraser, Hancock Hyd., 2, 1938, p. 111. 

 Eraser, ibid., 3, 1938, p. 135. 



