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digitata or to S. watersi. Mr Waters : ) has described a Xew Zealand fossil which he considers 

 "undoubtedly the same as the recent forms found by the 'Challenger' ". 



The Japanese Cyclostome described by Ortmann ■) as Hypocytis asteriscus has a close 

 general resemblance to the present species. The genus was distinguished from Supercytis by 

 the fact that the zooecia open at the ends of the rays and on their 'Unterseite'. As Ortmann 

 describes the entire colony as expanding 'oberwarts' into a disc prolonged into rays, I take 

 this to mean that the orifices are borne on that surface of the rays which I have described as 

 basal in the 'Siboga' specimens. The surface is said to be "gestreift". Fig. 19^ shows distinctly 

 outlined zooecia radiating from the centre of the colony, with orifices situated in the peripheral 

 parts of the rays. It presumably represents a view of the basal surface of the rays; in which 

 case a small circular area indicated in the middle of the figure probably represents either the 

 foreshortened stalk or the broken attachment of the stalk to the expanded terminal part of the 

 colony. If Ortmann's account has been correctly understood, it is hardly possible to regard the 

 Japanese species as a member of the genus Supercytis. 



The Supercytis digitata of MacGillivray and Hall 3 ) is said to have its orifices "on 

 the lower and not on the upper side"; and in this respect it agrees with Hypocytis. 



In its zoarial form, S. watersi has a considerable resemblance to Dcfrancia lucernaria 

 M. Sars, as shown by the figures given by Busk (1875, PI. XXXIII, fig. 3). It appears to differ 

 from that species in the characters of the ovicells, those of D. lucernaria being described by 

 Smitt 4 ) as swollen vesicles between the zooecial series, elongated in a radial direction. 



Fam. Lichenoporidae Smitt. 



Lichenoporidac Smitt, 1866, "Krit. fort. Skand. Hafs-Bry.", II, Öfv. K. Vet.-Ak. Förh. XXIII, 



p. 405. 

 Lichenoporidae Pergens, 1890, "Rev. Bry. Ci ét. figurés par d'Orbigny", Buil. Soc. Beige Géol., 



UI, p. 378. 

 Caveidae (pars) D'Orbigny, 1853, "Pal. Franc. Terr. Crét", V, p. 922. 

 Galeidae Jullien, 1SS8, "Bryozoaires", Miss. Sci. Cap Horn, VI, Zool., pp. 8, 82. 



As defined by Smitt, this Family consists of discoidal Cyclostomata, with a marginal 

 budding zone and zooecia radiating from a cancellated central reyion. For D'Orbigny's genera 

 included in this Family, reference may be made to Pergens' work, cited above. 



Lichenopora Defrance. 



Lichenopora Defrance, 1823, "Dict. Sci. Nat. XXVI, p. 256. 

 Lichenopora Hincks, 1S80, "Hist. Brit. Mar. Pol.", p. 471. 

 Disporella Gray, 1848, "List Brit. An. Brit. Mus.", I, p. 138. 

 Discoporella Busk, 1S59, "Crag Pol.", Palaeont. Soc, p. 115. 

 Discoporetla Smitt, 1. c. 



1) Waters, A. W., 1887, "Tert. Cycl. Bry. New Zealand", o. J. Geol. Soc, XI. III, p. 344. 



2) Ortmann, A., 1889, "Japan. Bry.", Arch. f. Naturg., Jahrg. LVI, Bd I, p. 66. PI. II, figs 19.7, 19/». 



3) MacGillivray, P. H., 1895, "Monogr. Tevt. Pol. Vict.", Trans. R. Soc. Vict. IV. p. 134, PI. XXII. figs. 1, 2: Appendix, 

 by T. S. Hall, p. 145. 



4) Smitt, F. A., 1S66, "Krit. förteckn." II, Öfv. K. Vet.-Ak. Förh., XXIII, p. 494. 



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SIEOGA-EXPEDITIE XXVIII a. 20 



