NO. 2 OSBURN: eastern pacific BRYOZOA — CHEILOSTOMATA 423 



cally located, and it may be replaced by a larger spatulate avicularium, 

 or sometimes wanting. There is much variation in the size and form 

 of the mandible, the tip of the triangular form is sometimes rounded 

 (subspatulate) and the spatulate mandible varies in size and is occa- 

 sionally so narrow as to be almost filiform; the spatulate avicularia 

 may sometimes be half as long as a zooecium. 



The ovicell is hyperstomial, rounded, 0.26 to 0.30 mm wide and 

 long, with numerous pores and a raised border about the base; the 

 peristome fuses with the ovicell at the sides of the aperture but is not 

 continued across the front. 



From the data at hand it seems that C. granulata, described from 

 the Galapagos Islands, is synonymous with C. anatina from Hawaii. 

 Canu and Bassler found only the small triangular avicularia on their 

 Galapagos material and among our specimens there are several colonies 

 in this condition. Hastings found spathulate avicularia in her Galapagos 

 specimens and they are present, but not constant, in our material from 

 the Galapagos and the Gulf of Mexico. The measurements are quite 

 variable, transcending in both directions those given for anatina. The 

 giant avicularia of Hawaiian specimens appear to be larger than any 

 from the Galapagos and if this should prove to be a constant feature 

 granulata may be worthy of varietal status. 



Hancock Stations: dredged at 14 stations among the Galapagos 

 Islands, Albemarle, James, Charles, Hood, Chatham, Albany, Onslow 

 and Wenman Islands; and three stations in the Gulf of California 

 at Angel de la Guardia, Isla Partida and Raza Islands, near 29°N 

 Lat. The known bathymetric range is from 14 to more than 100 fms. 



Godonellina anatina ligulata new variety 



This form is rather more distinct than granulata in lacking entirely 

 the small median suboral avicularium. The spatulate avicularia, occa- 

 sionally present, are narrower than those described for anatina, but are 

 of the same general character, about 0.26 mm long, variously located on 

 the front and without any definite orientation, turned sometimes forward, 

 sometimes backward or diagonally. The zooecia are smaller than the 

 usual measurements of the species, length 0.40 to 0.55 mm, the aperture 

 about 0.13 mm in either direction and the ovicell 0.26 mm wide. The 

 other characters agree with typical anatina. 



Type,AHFno.91. 



Type locality, Hancock Station 210-34, Santa Elena Bay, Ecuador, 

 2°ir25"S, 80°58'W, at 5 to 7 fms, three colonies. 



