NO. 2 OSBURN: eastern pacific BRYOZOA CHEILOSTOMATA 327 



ous infundibular pores, the areolar pores slightly enlarged ; finely granular 

 but no other surface decoration. The primary aperture is distinctly 

 broader than long, 0.18 to 0.20 mm wide by 0.14 to 0.16 mm long, evenly 

 semicircular beyond the strong cardelles, the proximal border broadly 

 arcuate or shghtly sinuate. The operculum has the form of the aperture, 

 with a brownish bordering sclerite and the muscle attachments at the 

 edge. The primary peristome is thin and somewhat raised ; the secondary 

 peristome, formed by the frontal, is low, the proximal border often 

 tuberculate. No spines, no avicularia. 



The ovicell is large, 0.40 to 0.45 mm wide, rounded, hyperstomial 

 but deeply embedded, closed by the operculum. Hincks' description is 

 good: "closely united to the cell above, somewhat depressed in front, 

 glossy, covered with rather large punctures ; a prominent thickened border 

 around the opening." This is exactly true for earlier stages of calcification, 

 but in later stages the secondary layer covers all of the front except a 

 rounded area on the top. 



Hincks described the species from Dolomite Narrows, British Colum- 

 bia, and O'Donoghue recovered it from San Juan Island, Puget Sound, 

 Washington. 



In the Hancock Collections are specimens from Middle Bank and 

 Hein Bank, Puget Sound, collected by Dr. John L. Mohr, and one also 

 from Cordova, Alaska, dredged by the "Albatross," June 28, 1914. 



Dakaria ordinata (O'Donoghue), 1923 

 Plate 57, figs. 10-11 



Schizoporella ordinata O'Donoghue, 1923 :38. 

 Dakaria ordinata, O'Donoghue, 1926 :61. 



The zoarium encrusts stones, shells, etc. ; also there is one branching 

 erect cylindrical colony which possibly may have encrusted an alga; 

 white and shining. The zooecia are variable in size and form, especially 

 those on the superficial layers ; on free-growing areas they measure 0.50 

 to 0.70 mm long by 0.35 to 0.45 mm wide; slightly ventricose, with a 

 separating line. The frontal is a tremocyst with moderately large pores, 

 smooth, without decoration except for a low, slightly tubercular rim 

 proximal to the aperture. The primary aperture is broader than long, 

 0.15 to 0.18 mm wide by 0.13 to 0.15 mm long, semicircular back to 

 the cardelles, broadly arched or slightly sinuate on the proximal border; 

 there is a narrow smooth proximal shelf between the aperture and the 

 beaded secondary rim of the peristome. The primary peristome is thin 

 and low, not obscured by the low secondary peristome, and without 

 spines. 



