NO. 2 OSBURN: eastern pacific BRYOZOA — CHEILOSTOMATA 287 



Zoarium delicate, erect, jointed, dichotomously branched, zooecia in 

 a single series, one or two to an internode ; rather slender and tubular, 

 dorsal outline curved ; length 0.50 to 0.60 mm ; the fertile zooecium and 

 the one distal to it are shorter, the combined length about 0.80 mm. The 

 frontal is transversely rounded, somewhat papillose, with a long vitta on 

 each side which extends nearly the full length of the front and bears 

 8 to 10 small pores. At each distal corner is a small avicularium with 

 a triangular mandible which has a sharp, recurved point ; rarely a giant 

 avicularium with a spatulate mandible replaces the usual form, but these 

 have not been observed on our scanty material. Rarely also the avicu- 

 larium is wanting, in which case there is a stout conical process. Radicles 

 are developed at about the middle of the dorsal side. Branches arise from 

 a daughter zooecium directly connected with the mother zooecium with- 

 out a joint, replacing the avicularium on that side. 



Our specimen is not in reproduction, but the ovicell of Caribbean 

 specimens is nearly round in outline, flattened on the front and deeply 

 embedded in the distal zooecium. The distal zooecium, attached without 

 a joint, is functional. 



Distributed around the world in warmer waters; as far north as 

 Bermuda in the Atlantic (Osburn), and reported for Japan (Okada). 



Cabeza Ballena, near Cape San Lucas at the southern tip of Lower 

 California, shore, collected by Dr. E. Y. Dawson (Sta. 53), one colony. 



Family Savignyellidae Levinsen, 1909 



"The narrow, elongated, rather slightly calcified zooecia have a 

 frontal surface, provided with scattered pores, which is separated from 

 the basal surface by a more or less sharp boundary line. The distal wall 

 has a number of uniporous or multiporous rosette-plates in its periphery. 

 Spines may appear around the aperture, proximally to which there may 

 be a freely projecting avicularium. We may find free ooecia, two-layered 

 from the proximal part, the ectooecium of which has a membranous 

 frontal side. The colonies are richly branched, jointed, and each internode 

 consists of a single zooecium" (Levinsen, 1909:273). 



Levinsen erected this family for the single genus Savignyella, but it 

 needs little modification to include the genus Euteleia Marcus, 1938, 

 which differs chiefly in the absence of avicularia and spines (oral tubercles 

 are present), and by the lack of an ovicell. The general zooecial charac- 

 ters, the manner of growth and budding ally Euteleia to Savignyella. 



