n6 



The ovicells (fig. 4) are not so broad as those of B. lineata \ and they show no disposition 

 to form a continuous ring. They are very clistinctly outlined, as their inflated part commences 

 suddenly, even on the proximal side. In one of the colonies on slide 551.C, the roof of the 

 ovicell has been broken ; permitting the observation to be made that the ovicell has a round 

 hole in its proximal wall, of the same diameter as a zooecium. This no doubt indicates the 

 regfion where the ovi^erous zooecium dilated suddenlv into an ovicell. The floor of this ovicell 

 is complete, the subjacent zooecia being covered by a calcareous film which conceals their 

 outlines. The ooeciostome is placed at the middle of the ovicell, near its distal border. It is 

 not terminal, as it is in B. suborbicularis\ and it slopes a little proximally (see left ovicell in 

 fig. 4). The ooeciostome is a short tube which is terminated by a nearly circular ooeciopore. 

 Several ovicells may be present in the same colony. 



The Japanese specimen agrees in all respects with those from the 'Siboga' Collection, 

 except for the difference, which has already been pointed out, of having all its central zooecia 

 occluded; but the form of the "closure" is as in the other specimens. 



Measurements, in u. : 



Greatest diameter of colony, fig. 4, 3,400; 

 YVidth of ovicells, fig. 4, 500, 525, 700 ; 

 Diameter of ooeciopore, 50 ; 

 Diameter of orifices, 70. 



2. Berenicca lineata 'MacGill. (PI. XI, figs 6, 7). 



Diastopora lineata MacGillivray, 1S85, "Descr. New Pol.", VII, Trans. Proc. R. Soc. Vict., 



XXI, p. 96, PI. III, fig. 1. 

 Liripora lineata MacGillivray, 1887, Ibid. XII, Trans. Proc. R. Soc. Vict., XXIII, p. 182. 

 Discotubigcrai lineata Waters, 1887, "Bry. N. S. Wales", II, III, Ann. Mag. Nat. Hist. (5) 



XX, p. 260, PI. VI, fig. 24. 



Discotubigera': lineata Waters, 1S89, "Ovicells Lichenoporae", J. Linn. Soc, Zool., XX, p. 284, 

 PI. XV, fig. 5 (ovicell). 

 i Diastopora bicolor MacGillivray, 1885, "Descr. New Pol.", VIII, Trans. Proc. R. Soc. Vict. 



XXI, p. 117, PI. V, fig. 2. 



? Diastopora bicolor MacGillivray, 18S7, McCov's "Prodr. Zool. Vict.", Dec. XV, p. 180, 



PI. CXLVII, figs 3, ia. 

 ? Liripora bicolor MacGillivray, 1905, "Monogr. Tert. Pol. Vict.", Trans. R. Soc. Vict., IV, 



p. 131, PI. XX, fig. 8; Hall, Ibid., Appendix, p. 138. 

 ? Diastopora prominens Ortmann, 1889 (nee Lamouroux, 1821), "Japan. Bry.", Arch. f. Naturg. 



Jahrg. LVI, Bd I, p. 64, PI. IV, fig. 38. 



104. C. Stat. 139. o°ii'S., i2/°25 E., 397 Metres; mud, stones and coral. 

 424. A. Stat. 240. Banda Anchorage, 9 — 45 Metres; black sand, coral; Lithothamnion-bank 

 in 18 — 36 Metres. 



Also (Mus. Zool., Cambridge) : — 



Singapore, New Harbour, 6 fathoms, Dr. R. HANIïSCH, Reg. Apr. 10, 1900. 



Japan, Uraga Channel, off Tokyo, 30 fathoms, A. Owston Coll., 7. X., Reg. June 23, 1902. 



Each of the above localities is represented by a single specimen. 



116 



