14: Mr. A. W. Waters on Bryozoa from 



description of "margin tliiu" only relates to the younger 

 zooccia. 



There are about IG tentacles. 



Hah. New Zealand [Uincks) ; Dunedin {Hamilton) ; Red 

 Bluffj Chatham Island. 



Membranipora pilosa, L., Mxv.jiagellum, MacG. 



This differs from specimens from Victoria in having the 

 central spine below the area much shorter, being usually 

 shorter than tlie length of the area. The zoarium is growing 

 on the stalk of a seaweed, and in parts it is seen to be in 

 regularly transverse series, but in other parts the zooecia are 

 in irregular quincunx; however, this is probably caused by 

 the shape of the stalk upon which it is growing. There 

 is on each side a stout marginal spine near the upper end of 

 the margin, and also near the base of the margin a small 

 spine, which is often absent, in this respect corresponding 

 with specimens from Victoria sent over by MacGillivray. 

 The " deep arched vault " above the area is large and con- 

 spicuous, as described by MacGillivray ; but this is also very 

 marked in a specimen of M. j)ilosa, L., from Norway. The 

 central spine is sometimes, but not always, to one side, and 

 I do not attach as much importance to this as MacGillivray 

 did. 



Hab. Victoria ; Maunganui, Chatham Island. 



Membranipora tri/oHum, form minor, Hincks. 



Membranijjora trifolium, form minor, Hincks, Ann. & Mag. Nat. Hist, 

 ser. 5, vol. vi. p. 67, pi. xi. 6g. 6 ; op. cit. ser. 5, vol. xv. p. 255, 

 pi. ^-iii. fig. 7. 



From Maunganui, Chatham Island, there is a small 

 fragment which seems to be the variety described by Hincks 

 as occuiTing from Bahia and Tahiti. 



Beania magellanica (Busk). (PI. I. fig. 22.) 



For synonyms, see my memoir on the " Bryozoa," Exped. Antarct. Beige, 

 p. 28, pi. viii. figs. 7 a-c, and since then Calvet, in " Bryozoen," 

 Hamburger Magal. Sammelreise, p. 8, has given some fresh localities 

 from the Straits of Magellan, Tierra del Fuego, and Falkland Islands. 



In the d^Urville- Island specimens there are 28 tentacles. 

 The zocecia are much nearer together than in most specimens 

 of B. mayellanica, forming a close mat, both the zooecia and 

 avicularia being larger than is usual. The four projections 

 on the distal end are very small and the stout radicle starts 

 from close up to the distal end. 



Hab. French Pass, d'Urville Island, New Zealand. 



