NO. 2 OSBURN: eastern pacific BRYOZOA CHEILOSTOMATA 325 



The ovicell is rounded, prominent, slightly flattened on the front, 

 closed by the operculum, perforated and roughened like the frontal, and 

 measures 0.26 to 0.30 mm in width. 



The high, thick separating walls and the tuberculate rim of the 

 secondary peristome are present on all but the young zooecia. The 

 peculiar, curved, reversed avicularia are usually rare, but sometimes are 

 more numerous. 



Type, AHF no. 63. 



Type locality. Station 406-35 off Monkey Point, Gorgona Island, 

 Colombia, 2°57'00''N, 78°10'00^'W, at 22 fathoms. Also taken at Sta. 

 23-33, La Plata Island, Ecuador, along shore, and at 275-34, west of 

 Navidad Head, Tenacatita Bay, Mexico, 19°12'50''N, 104°49'48"W, 

 several colonies at 25 to 30 fms. 



Genus DAKARIA Jullien, 1903 



Schizoporellae without avicularia and with a rounded sinus (rimule). 

 Jullien's description is brief and not too comprehensive. Translated it 

 reads as follows: "Frontal smooth, perforated by numerous small pores 

 (origelles), especially in the proximal region. Orifice of the young with 

 the two lips juxtaposed at their extremities, the extremities of the anter 

 enclosing between them those of the poster" (Jullien 1903:90). In other 

 words the distal border of the aperture is a wider circle than that of the 

 proximal border. Genotype, D. chevreuxt Jullien, 1903 :90. 



The genus is certainly close to Schizoporella, but it should be added 

 that the operculum has a broader bordering sclerite, with the muscle 

 attachments near the margin and that the operculum closes the ovicell. 



Key to Species of Dakaria 



1. Ovicell with a distinct frontal area 2 



Ovicell without a restricted frontal area 4 



2. Area of ovicell elongate triangular pristina 



Area of ovicell more or less rounded 3 



3. Area central, separated from the orifice dawsoni 



Area not separted from the orifice ordinata 



4. Numerous oral spines biserialis 



No oral spines 5 



5. Ovicell evenly perforated, not more than 0,40 mm wide, 



peristome beaded sertata 



Ovicell 0.50 mm or more in width, peristome low and without 



beaded rim apertura 



