746 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL, 14 



The zoaria are adherent to the substrate, minute, delicate, rather 

 difficult to see without the aid of a lens. The zoaria consist of primary 

 and secondary stolons, usually at right angles to each other, with the 

 secondary stolons originating in pairs, one stolon on either side of the 

 primary stolon, adhering closely to the substrate. The primary stolons 

 are septate, divided into internodes. Septa are also found at the junction 

 of the secondary or lateral stolons. The internodes are of variable length. 

 The diameter of the stolons ranges from 0.02 to 0.05 mm. The zooecia 

 arise in pairs from kenozooecia placed at each side of either a primary 

 or secondary stolon. In a number of instances in the eastern Pacific 

 material, the substrate was Amathia convoluta and Amathia vidovici, 

 and thus did not permit paired zooecia to arise consistently. The zooecia 

 range in length from 0.57 to 0.62 mm, and in width from 0.16 to 0.20 

 mm. The basal portion of the zooecia is rounded, somewhat swollen, 

 and usually bears 2 spine-like processes. Distally, the zooecia taper, 

 and each bears upon the oral extremity 4 spine-bearing protuberances 

 that encircle the aperture. A long setigerous collar may or may not 

 project from the aperture. The polypide contains a prominent gizzard. 

 The tentacles number 8. 



Aeverrillia setigera, previously unreported from the eastern Pacific, is 

 a semitropical species, having been reported from the warmer waters of 

 the southwest Pacific (Ceylon, New Guinea, Gulf of Bengal, China 

 Sea), from the waters off Puerto Rico, from the Suez Canal, from 

 Brazil, and as far north as Long Island Sound, Connecticut, and New 

 Bedford and Woods Hole, Massachusetts, on the Atlantic Coast of 

 North America. 



Hancock Stations: 133-34, Socorro Island, west of Mexico; 445-35, 

 Panama City, Panama ; and 847-38, southwest of Zorritos Light, Peru. 

 Depth, intertidal to 35 fms. 



Family Buskiidae Hincks, 1880 



"Zooecia contracted below, not continuous with the creeping stolon, 

 with an aperture on the ventral surface." Hincks, 1880:531. In the 

 light of present knowledge of this family, the above diagnosis must be 

 modified : Zooecia contracted proximally, arising directly from the 

 stolon, aperture terminal. 



Genus BUSKIA Alder, 1857 



Zoaria repent or erect, stolonate. Zooecia arising directly from the 

 stolon. Polypide with a prominent gizzard. Genotype: Buskia nitens 



