240 ME. A. W. WATEBS ON 



growth, having the same form as Microporella Syadesi^ Jull. ; 

 and both resemble Lepralia foliacea, Ell. & Sol., in zoarial 

 growth. 



The zocecia are elongate, ovate, very slightly convex, with 

 pores over the surface, the pores near the border frequently 

 being the largest. The peristome usually meets in front, 

 forming a large pore below, there is a wide denticle in the oral 

 aperture, and below the distal border there is a crenulated arched 

 shelf. Near to the oral aperture there is a spatulate avicularium, 

 which, however, is sometimes replaced by one having a large 

 wide avicularian chamber, giving the zooecium a very inflated 

 appearance. The mandibles of these avicularia are wide, with 

 the distal arc rather less than a half -circle. 



The ovicell is slightly raised and perforated. There are two 

 distal rosette-plates, and three large lateral ones to each lateral 

 wall. 



This is in some respects similar to Smittia antarctica, Waters, 

 but is quite distinct. 



Although I have rarely given personal names, on account 

 of the difficulty they frequently occasion to naturalists of other 

 countries, yet I have made an exception, and named this after 

 the collector, as names of most of the other members of the 

 staff v^ere used by Jullieu. 



Sab. Station unknown, and St. 32, lat. 53° 73' S., long. 

 68° 31' W., 97 met., -f 6°-6 Cent. 



Smittia sp. 



There is a small specimen which corresponds with S. marmorea, 

 Hincks, but there are no ovicells, and there are several spines 

 round the oral aperture. The small triangular avicularium below 

 the aperture is often directed diagonally downwards. 



Cellaeinella dubta, Waters. 



Cellarinella clnbia, Waters, Exped. Antarct. Beige, Bryozoa, p. 68, 

 pi. 8. figs. 12 a, b, and fig. 2 in text. 



The Cape Horn specimens were referred to in my Antnrctic 

 Eeport. 



Hah. Antarctic ( 7^^.) ; Patagonia ; Tierra del Euego ; Straits of 

 Magellan. 



Exped. Cape Horn : Station 4, lat. 50° 52' S., long. 67° 36' W., 

 140 met., 5°-7 Cent. ; Entre Tile Navarin et File Hoste, 270 met., 

 7°-71 Cent. 



