2. Crisia cuneata Mapl. (PI. VIII, figs 13 — 17). 



Crisia cuneata Maplestone, 1905, "Lord Howe Island Pol.", Proc. R. Soc. Vict. (N. S.) XVII, 



p. 390, PI. XXIX, fig. 12. 

 ? Crisia cylindrica Ortmann, 1889 (nee Busk), "Japan. Bry.", Arch. f. Naturg. LVI, I. p. 58, 



PI. IV, fig. 17. 

 Crisia circinata Waters, 1914, "Mar. Fauna Brit. E. Afr.", "Bry. Cycl.", Proc. Zool. Soc., 



p. 840, PI. I, figs 7 — 9. 



120. B. Stat. 164. i°42'.5 S., I30°47'.5 E., 32 Metres; sand, small stones and shells. 

 and (Mus. Zool., Cambridge), Japan, off Tokyo, 40 fathoms, A. Ow'STON Coll., Reg. June 23, 

 1902, Slide 5. AM. (Now transferred to the British Museum). 



Zoarium small and delicate. Margin of branches strongly serrate, owing to the marked 

 projection of the zooecia, the peristomes of which are directed obliquely outwards. The zooecia 

 of each pair are in contact in the middle line of the branch. Internodes variable in length, 

 sometimes consisting of 5 or 7 zooecia, but commonly more elongated. Branching rather irregular, 

 the branches arisinsr at variable heio'hts in the internode. 



(Japanese specimens) Ovicell projecting strongly in a direction at right angles to the 

 branch, with a relatively long, curved ooeciostome arising not far from the point where it 

 becomes free. 



I have found only minute fragments, without ovicells, in the 'Siboga' Collection ; and they 

 were unfortunately damaged after being mounted. I should not have ventured to record the 

 species if it had not been for the evidence of a Japanese specimen in the Cambridge Collection, 

 agreeing well in zooecial characters with the fragments from Stat. 1 64, except in being more 

 robust; and hearing ovicells of the remarkable type shown in figs 15 — 17. 



C. cuneata was described by Maplestone from Lord Howe Island, E. of New South 

 Wales. The ovicells described and figured in the original account are of the type figured in 

 the present Report, but they are said to have "a fiattened distal end on which is an oval 

 aperture". This appears to indicate that the calcification of the ovicell was not complete; and 

 that the ooeciostome is not described in the original account. 



The ovicells of the Japanese specimens (figs 15 — 17) are remarkably prominent, their 

 distal extremity being in the form of a cylinder terminated by a rounded or conical end, the 

 elongated being at right angles to the surface of the branch. The ooeciostome is a conspicuous 

 tube, of slightly curved form ; and it originates, in the usual position, not far from the point 

 where the ovicell becomes free. Ovicells of a similar shape have been described in other species 

 of Crisia and particularly in the forms referred by Busk respectively to C. edwardsiana d'Orb. l ) 

 and C. biciliata MacGill. 2 ), and in C. injlata Waters 3 ) ; but in these cases the ooeciostome is 

 given off near the end of the produced part of the ovicell ; while in the first two species the 

 zooecia bear spines. 



A portion of the zoarium of the 'Siboga' material is shown in fig. 13. It is unfortunately 

 too incomplete to enable any positive statements to be made with regard to the mode of 



1) Busk, G., 1875, PI. II, fig. 7. See also Miss A. Robertson, 1910, p. 237, PI. XIX, fig. 10. 



2) Ibid., 1S86, Challenger Rep., Pt L, PI. I, fig. I c. 



3) Waters, A. W., 1914, PI. I, fig. 2. 



103 



