NO. 5 ERASER : HYDROIDS 215 



Obelia gracilis Calkins 

 Obelia ffracilis Calkins, Puget Sound Hyd., 1899, p. 353. 

 Fraser, Hyd. Pacific Coast, 1937, p. 87. 



Distribution. — East of Gull Island, south of Santa Cruz Island, 6-10 

 fathoms; off San Pedro breakwater, 4 fathoms; 3 miles off Seal Beach, 

 11 fathoms; Newport Harbor, in channel, 4-10 fathoms; off San Nicolas 

 Island, 28-31 fathoms; off Santa Maria Bay, Lower Calif., 18-25 fath- 

 oms. 



Obelia griffini Calkins 

 Obeiia ffrifflni Calkins, Puget Sound Hyd., 1899, p. 357. 

 Fraser, Pacific Coast Hyd., 1937, p. 88. 

 Distribution. — South Bay, Cedros Island, 10-15 fathoms. 



Obelia hyalina Clarke 

 Obelia hyalina Clarke, Blake Hyd., 1879, p. 241. 



Fraser, Hancock Hyd., 1, 1938, p. 37. 

 Fraser, ibid.,3, 1938, p. 133. 

 Fraser, Atlantic Hyd., 1944, p. 160. 



Distribution. — Off Rocky Point, Sonora, Mexico, 10 fathoms; San 

 Francisco Bay, east of Panama City, shore. 



Obelia longissima (Pallas) 

 Sertularia longissima Pallas, Elench. Zooph., 1766, p. 119. 

 Obelia longissima Fraser, Hyd. Pacific Coast, 1937, p. 88. 



Distribution. — Hallmark Dock, and other locations, Charleston, 

 Ore., intertidal ; Anaheim Landing, Calif., intertidal ; 6 miles SE of San 

 Pedro breakwater, 20-21 fathoms; off Isthmus Cove, Santa Catalina 

 Island, 80-100 fathoms; off Goat Harbor, 21 fathoms; off Coronado 

 Beach, 6-7 fathoms ; off Octavia Rocks, Colombia, 45 fathoms. 



Obelia plicata Hincks 

 Obelia plicata HiNCKS, Br. Hyd. Zooph., 1868, p. 154. 

 Eraser, Pacific Coast Hyd., 1937, p. 90. 

 Eraser, Hancock Hyd., 1, 1938, p. 38. 

 Eraser, ibid., 2, 1938, p. 109. 

 Distribution. — Anaheim Landing, Calif., intertidal ; 4 miles north of 

 Todos Santos Island, Lower Calif., 41 fathoms; 3 miles north of Nativi- 



