BRTOZOA PROM NEAR CAPE HORjST. 237 



Horn Expedition, D. 188, Sept. 14th, 1883, 135 metres, north of 

 Palkland Islands. [East Patagonia, 80 fathoms, Oalvet.^ 



MicEOPOEELLA Htadesi (JuIUen). (PI. 28. figs. 1-5.) 

 Fenestrula Wyadesi, Jullien, Mission Scientifique du Cap Horn, p. 44, 

 pi. 4. fig. 7j [Calvet, Bryozoen, Hamb. Magalh. Sammelreise, p. 21], 



There are several pieces from Cape Horn from unknown 

 stations ; and also in the Museum d'Histoire Naturelle in Paris 

 there are several (JSTos. 260 a, 261 a) collected from the Falkland 

 Islands by M. du Petit-Thouars, in the Erench " Expedition de 

 la Venus.' 



The bilaminate zoarium is large, foliaceous, either contorted 

 or with, large flat pieces, out of which similar flat pieces grow at 

 right angles, anastomosing and forming rectangular cavities. In 

 the Falkland Island and the Cape Horn specimens there are 

 ovicells, whereas Jullien's single small specimen contained none. 

 The ovicell is much raised, globular, finely granular, and below 

 it (proximally) there is a separate bridge over the aperture, 

 being formed by a calcareous growth from the two sides meeting 

 in the middle. 



There are many cases of Bryozoa having a bridge below the 

 aperture, but no other species has been described in which it 

 seems to belong to the ovicell, in the same way as in this species. 

 In some ovicells the distance between the bridge and the ovicell 

 is slight, and then at first sight it might be takea for part of the 

 ovicell. 



The surface of the zooecium is granular and perforate. The 

 operculum has the proximal border notched to correspond with 

 the crenulated border of the aperture. The mandible is slightly 

 winged at both sides, somewhat resembling that of Diporula 

 Jiastigera, B. The median pore is denticulate (fig. 2). 



Sab. Lat. 53" 13' S., long. 68° 31' W., 97 met. {JuMien) ; ofi'the 

 Falkland Islands {litis. cVHist. Nat.) ; Station unknown. [East 

 Patagonia, lat. 44° 32' S., long. 61° 25' W., " deep sea"; Cape 

 Blanco, 80 fath., Calvet.'] 



SCHIZOPOEELLA PATAGONICA, Sp. UOV. (PI. 28. figS. 8-11.) 



Zoarium adnate. Zooecia ovate, convex, granulate, with an 

 acute avicularium directed upwards on each side of the aperture. 

 Above the oral aperture there are six spines, some of which are 



