NO. 3 OSBURN : EASTERN PACIFIC BRYOZOA CYCLOSTOMATA 777 



The ovicells, on nearly all of the zooecia, are set transversely across 

 the distal end of the zooecia, rounded and prominent, 0.18 mm wide by 

 0.14 mm long, complete, but the orifice large, the surface not striated, 

 in reproduction in February. 



The complete absence of jointed spines, the form of the avicularium 

 and especially the sharply acuminated mandible appear to separate this 

 variety sufficiently from B. flabellata. 



Type, AHF no. 130. 



Type locality, Hancock Station 66-33, Tagus Cove, Albemarle Island, 

 Galapagos, 0°16'17"S, 91°22'41"W, at 10 to 20 fms, several colonies. 



ASCOPHORA 



Pachyegis brunnea (Hincks) 

 Plate 81, fig. 11 



See Part 2, p. 315. 



The ovicells can now be described as I have found them at the margin 

 of a large colony. They resemble those of P. princeps (Norman), hyper- 

 stomial and prominent but considerably depressed on the base of the 

 succeeding zooecium. With increased calcification they become more 

 submerged but lack the heavy collar which develops across the front of 

 P. princeps; width and length about 0.40 mm. 



Emballotheca stylifera (Levinsen), 1886 

 Plate 81, fig. 5 



Escharella stylifera Levinsen, 1886:17. 

 Schizoporella condylata Nordgaard, 1906:18. 

 Schizoporella (Emballotheca) stylifera, Levinsen, 1916:453. 

 Schizoporella stylifera, Nordgaard, 1918:57. 



Zoarium encrusting shells and stones, unilaminar, and the shining 

 ectocyst with reddish-brown pigment. The zooecia are moderate in size, 

 0.60 to 0.75 mm long by 0.40 to 0.55 mm wide, elongate-hexagonal in 

 form and rather regularly arranged in quincunx, separated by very thin 

 raised lines. The moderately inflated frontal is a tremocyst with fewer 

 pores than is usual in the genus. Beneath the rather thick ectocyst the 

 frontal is finely granulated, but there are no other surface decorations, 

 and spines and avicularia are both wanting. Dietellae conspicuous on 

 the dorsal surface. The aperture is nearly round, 0.16 to 0.18 mm wide, 

 somewhat transverse proximal to the prominent cardelles, and between 

 these is a shallow arcuate sinus nearly half as wide as the aperture. 



