Chatham Island and d* UrviUe Island. 13 



Bcania bUuminata ( lliiicks). (PI. I. fijjs. 19-21.) 



Diachon's bilaminata, Ilinckf), Ann. & Mag. Nat. Hist. ser. 5, vol. vii. 



p. 1.07, ])1. viii. liffs. 7, 7 a. 

 Flustin jiapi/racea, lluttun, Cat. New Zeal. Afollusca, p. 187 (Jide 



Jelly). 



The colonies commence with a uuilaminatc groMth, 

 coveriug stalks of seaweed, often growing for a considerable 

 distance attached, then they become free, nsually Ijilaminatc, 

 but sometimes portions arc iinilamiiiate. The free portion 

 is frondosc. The zooecia are slightly free at the ends, and 

 the long thick radicles from the other layer frequently appear 

 between the zooecia, for the only attachment of the two 

 layers is by means of the radicles, so that it is not bilami- 

 nate in the same sense as Flustra and many other Bryozoa. 

 The lateral connexions are through a round disk wit^hout 

 connecting-tubes. 



The avicularia and mandibles are smaller than those of 

 D. niaf/illunica, B., from d'Urville Island, and in no case 

 have 1 found two avicularia to the same zooccium, nor are 

 the avicularia ever abundant. I have already * called 

 attention to the double columella which occurs in this species 

 as well as in B. mugellanica, Busk, and B. erecta, Waters. 

 The avicularium is placed rather higher than shown in 

 Hincks's figure, which was from a dried specimen. At each 

 side of the oral aperture there is a spinous process and at the 

 distal end there is often a small notched process, but this is 

 at a lower level than the border of the zocecium and is not 

 ahvavB seen. 



There are 27-28 tentacles. 



Hub. New Zealand (//.) ; Napier and Wauganui [Hamilton 

 S^' Waters) ; French Pass, d'Urville Island, New Zealand. 



Beania intermedia (Hincks). (PI. I, figs. 16-18.) 



Diachoris intermedia, Hincks, Ann. & Maj^-. Nat. Hist. ser. 6, vo]. viii. 



p. 74, pi. V. fig. 8. 

 Beania intermedia, MacG. Prod. Zool. \'ict. dec. xx. p. 3-46, pi cxcv 



fig. 3. 



The zoarium is uniserial, creeping over the stalks of sea- 

 weeds. There is a connecting-tube to eacli zooccium distally 

 and proximally, but only one tube on each side, and these 

 tubes are always formed even when there is no lateral growth. 

 This has not been shown in previous figures, which have 



♦ " On the U.se of the Avicularian Mandible in the Determination of 

 the Chcilostoinatous liryozoa," Journ. Roy. Micr. Soc. ser. '2, vol. v. p. 3 ; 

 Exp^d. Antarct. 15elge, Bryozoa, ])p. 1*0, 30. 



