24 ALLAN HANCOCK ATLANTIC EXPEDITION REPORT 



Genus GAULIBUGULA Verrill 1900 



Similar to Bugula in most respects, except that the zoarium has a 

 jointed stalk consisting of a series of elongate modified zooecia (keno- 

 zooecia) devoid of a polypide. The branches are biserial and the ooecia 

 often incomplete. 



Gaulibugula levinseni Osburn, 1940 



Osburn 1940:394. 



A small fragment apparently belongs to this species, judging by the 

 measurements and form of the zooecia, the absence of terminal spines 

 except the occasional elongate one on the inner angle, and the mode of 

 branching. Ovicells and avicularia are wanting from this fragment of 

 the tip of the branch. 



Distribution. — Station At504, 1 mile off Aruba Island at 71 fms. 



Genus BEANIA Johnston 1840 

 Beania mirabills Johnston, 1840 



Osburn 1914:189; 1940:398. 



Distributed around the world in warm and temperate waters. 

 Because of the loose growth habit and the small size of the colonies they 

 are readily overlooked, especially as they are usually found among 

 hydroids, algae, and other erect Bryozoa. Osburn records it from the 

 Tortugas Islands, Florida, and off the mouth of Guanica Harbor, Porto 

 Rico. 



Distribution. — A 14-39, 2 miles SW of Cape la Vela, Colombia at 

 21 to 22 fms. 



Beania hirtissima (Heller), 1867 



Osburn 1940:397. 



This species usually forms a bristly mat loosely attached to the sub- 

 stratum, occasionally growing free. The spines are remarkable for their 

 number and length; about 10 or 12 fine ones on each side of the opesia 

 and the same number of longer stouter ones around the distal end of the 

 zooecium. Unlike our other species, the zoarium is multiserial and the 

 connecting tubules are short. Osburn reported it from Porto Rico and 

 the Bermuda Islands, and Marcus obtained it at Santos Bay, Brazil 

 (1937:62). Otherwise it is known from the Mediterranean Sea and 

 the Cape Verde and Madeira Islands. 



Distribution. — Station At505, Aruba Island at 23 fms, one colony. 



