NO. 1 OSBURN: EASTERN PACIFIC BRYOZOA CHEILOSTOMATA 155 



the California coast from Monterey southward it is usually the most 

 conspicuous bryozoan species, the dark reddish or purplish brown clusters 

 clinging to anything that will afEord attachment. It is also constant in 

 its presence on piles of wharves and the under side of floats. Robertson 

 records it for California from Monterey Bay southward. Hastings lists 

 it for the Galapagos Islands and the Canal Zone. 



In the Hancock collections it occurs abundantly from the Channel 

 Islands, California, all down the Mexican coast and on to the Galapagos 

 Islands and in the Gulf of California as far up as Angel de la Guardia 

 Island. Although it is characteristically a shallow water species it has 

 been dredged at a depth of 43 fms off Santa Cruz Island, California. 



Bugula minima (Waters), 1909 

 Plates 22, fig. 8 and 23, fig. 5 



Bugula neritina var. minima Waters, 1909 :136. 

 Bugula neritina var. minima, Hastings, 1930 :704. 

 Bugula minima, Hastings, 1939:334. 

 Bugula minima, Osburn, 1940:390. 



Resembling B. neritina in its general aspects, but much smaller, lighter 

 in color and with avicularia. It does not appear to be an abundant species, 

 but it is distributed around the world in warmer waters ; in the Red Sea, 

 Indian Ocean, Malay and New South Wales; Osburn lists it from the 

 Tortugas Islands, Florida, and Porto Rico, and Hastings recorded it 

 from Gorgona, Ecuador, and the Galapagos Islands. 



Hancock Station 779-38, off Nuez Island, Cocos Islands, Costa Rica, 

 30 to 50 fms. Also from the Gulf of Panama, Isla Santelmo, on pearl 

 oysters (Galtsoff collection). 



Bugula pacifica Robertson, 1905 

 Plates 22, fig. 6, and 23, fig. 4 



Bugula pacifica Robertson, 1905:268. 

 Bugula purpurotincta, Robertson, 1900:320. 

 Bugula pacifica, O'Donoghue, 1923:20; 1926:45. 



A northern species which Miss Robertson indicated as distributed 

 from the Pribilof Islands, Bering Sea, to San Francisco Bay; she de- 

 scribed it from material collected by Dr. W. E. Ritter at Orca, Prince 

 William Sound, Alaska. O'Donoghue found it at numerous localities 

 in British Columbia, and the writer has specimens taken by Prof. G. E. 

 MacGinitie at Departure Bay, near Victoria, British Columbia. The 

 species is easily recognized by the very incomplete ovicell which is barely 

 large enough to cover the egg and not half large enough to cover the 



