NO. 1 OSBURN : EASTERN PACIFIC BRYOZOA CHEILOSTOMATA 13 



It is a very widely distributed species, known from the coasts of 

 Europe, the Indian Ocean, the western Pacific from Japan to Australia, 

 the western Atlantic from Nova Scotia to Brazil, and on the American 

 Pacific from British Columbia to the Galapagos Islands. 



Hancock Stations: dredged at 66-33, Albemarle Island, Galapagos; 

 391-35, Lobes de Afuera Islands, Peru; off Octavia Rocks, Colombia; 

 998-39, 1155-40 and 1407-41, Santa Catalina Island, and 1271-41, 

 Anacapa Island, southern California, 10 to 36 fms. Common along shore. 



Aetea ligulata Busk, 1852 



Plate 1, fig. 4 



Aetea ligulata, Hincks, 1884:2. 

 Aetea fuegensis ]\i\\\tn, 1888: 1.25. 

 Aetea crosslandi Waters, 1910: 253. 

 Aetea ligulata, Marcus, 1937 :30. 

 Aetea sica, Canu and Bassler, 1928 :51. 

 Aetea ligulata, Osburn, 1940 :347. 



The erect portion of the zooecium is straight and the "head" but 

 little wider than the stalk. The stalk is coarsely wrinkled or corrugated, 

 quite different in appearance from the fine annulations of anguina and 

 recta in which the appearance of annulation is produced by the arrange- 

 ment of minute tubercles ("punctations") ; the basal portion is also 

 sometimes wrinkled, and both basal and erect portions are also finely 

 "punctate." 



Silen (1941:12) has described another species {A. boninensis) from 

 the Bonin Islands, which has a similarly corrugated stalk, but the head 

 is widely expanded and the basal portion smooth. 



A widely distributed species recorded from Patagonia and the 

 Straits of Magellan (Busk), Queen Charlotte Islands, British Columbia 

 (Hincks), Terra del Fuego (Jullien), Red Sea (Waters), Bay of 

 Santos, Brazil (Marcus), Caribbean Sea (Osburn), and Magdalena 

 Bay, Lower California (Osburn). 



In the Hancock collections it occurred commonly along shore and 

 about the islands of southern California, and was dredged also at the 

 following stations: 132-34 and 924-39, Socorro Island; 155-34, Albe- 

 marle Island, 170-34, Chatham Island and 179-34, Bartholomew Island, 

 Galapagos; 411-35, Gorgona, Colombia; and 531-36, San Francisquito 

 Bay, Lower California. Also, Gulf of Panama, Galtsoff collection on 

 pearl oysters. 



