76 
THE VOYAGE OF H.M.S. CH ALLEN GEE. 
M. Milne-Edwards as a synonym of this species, but in this view I am quite unable to 
support him, agreeing in that respect with Mr. Waters and Mr. Macgillivray, and I 
presume also with Mr. Hincks. Mr. Waters, 1 again appears to regard it as synonymous 
with my Vincularia ( Steganoporellci ) neo-zelanica, from which, however, it is quite dis- 
Fig. 4. — Sleganoporella magnilabris. 
tinct, as may be seen in several points of their structure, and very readily in the opercula, 
which in Steganoporella neo-zelanica are all of one kind, and present a totally different 
pattern in the chitinous framework, &c. 2 
4. Caleschara, Macgillivray. 
Caleschara, Macgilliv., Nat. Hist. Vic., Dec. v. p. 45. 
Membranipora (sp.), Hincks, Ann. and Mag. Nat. Hist., ser. 5, vol. vii. p. 152, 1881. 
Character. — Zoarium polymorphous ; erect, foliaceous and contorted, or composed 
of ligulate branches and bilaminar ; or decurrent and encrusting. Zooecial area pyriform ; 
the margin very thick and bevelled off to a considerable depth, so as to leave a very 
contracted elliptical aperture, at first membranous, but eventually occupied in the lower 
two-thirds by a calcareous lamina attached below to the bottom of the aperture, and 
above by a broad band to each side, and leaving on either side an elongated fissure. The 
upper third above the lamina represents the internal or secondary oral orifice. In the 
1 Oeol. Journ., Nov. 1£82, p. 506, pi. xxii. figs. 7-7 a. 
2 Several fine specimens of this species, in the liemescharine state, are in the British Museum. 
