NO. 3 OSBURN : EASTERN PACIFIC BRYOZOA — CYCLOSTOMATA 663 



The ovicell usually occupies 3 (sometimes 2, or 2 on one side with 3 

 on the other) of the interfascicular areas on each side toward the distal 

 end and extends laterally the full width of the lobe, smooth or slightly 

 wrinkled and perforated with very numerous minute pores. The ooecio- 

 stome is short, erect, about as wide as a peristome, the aperture suddenly 

 expanded transversely and 0.09 mm long by 0.18 mm wide; located 

 slightly proximal and medial to the first peristome of a fascicle and not 

 connate with it. The ovicell is usually situated near the tip of the lobe, 

 but in two cases there is an additional one situated more proximally, 

 smaller and separated from the distal one by 2 or 3 fascicles. 



Type, AHFno. 118. 



Type locality, Hancock Station 450, Albemarle Island, Galapagos, 

 0°55'S, 90°30'W, at 60 fms. Also dredged at stations 190-34, Albemarle 

 Island ; 201-34 and 473, Hood Island ; 41 1, Duncan Island ; 452, Charles 

 Island ; 453, Gardner Island, and 484, Barrington Island, all from the 

 Galapagos, at 25 to 75 fms. It is evidently well distributed among the 

 Galapagos Islands but has not been noted elsewhere. 



Platonea expansa new species 

 Plate 69, fig. 3 



The zoarium consists of somewhat clavate lobes about 2 mm in width 

 near the extremity, the tip rounded, loosely attached, apparently always 

 on algae. The fascicles are unusually long, very regular and alternating 

 in arrangement on each side of the midline of the lobe ; the fascicles near 

 the proximal end with 4 to 6 tubules, the more distal ones with about 

 7, closely connate to their tips, except for 1 or 2 at the outer ends which 

 are either connate only at the bases or are entirely free. There is a 

 moderately broad basal lamina. The apertures of the tubules are quad- 

 rangular in the connate series, round in the free ones, and measure about 

 0.14 mm in diameter. Distance between the fascicles averages about 

 0.24 mm. 



The ovicell is very broad, extending to the outer ends of the fascicles, 

 and occupying three interfascicular areas on one side and two on the 

 other, smooth with numerous very small pores. The ooeciostome, proxi- 

 mal to the first peristome of a fascicle, is short, not connate, its diameter 

 at the base noticeably wider than a peristome, directed somewhat proxi- 

 mally, flared widely at the tip, the opening transversely elliptical. 



The length and regularity of the high fascicles is the most striking 

 feature of the species. 



Type, AHF no. 120. 



