IÓ2 



Lichenopora ciliata Waters, 1889, "Ovicells Lichenoporae", J. Linn. Soc. Zool., XX, p. 283. 

 Lichenopora ciliata, L. hispida and L. verrucaria Philipps, 1S99, Wille Y's Zool. Res., Pt IV, 

 p. 441. 



394. P. Stat. 144. Anchorage N. of Salomakiëe (Damar) Island, 45 Metres ; coral-bottom and 

 Lithothamnion. 1 colony. 

 (?sp.) 568. E. Stat. 105. 6°8'N., I2I°I9'E., 275 Metres; coral-bottom. 1 colony. 



Also (Univ. Mus. Zool., Cambridge): — 



Torres Straits, A. C. Haddon Coll., 6, Reg. Feb. 24, 1898. 1 colony. 



Torres Straits, A. C. Haddon Coll., 81, Reg. Feb. 24, 1898. 1 colony. 



Japan, Uraga Channel, 30 fathoms, A. Owston Coll., 7. Q., Reg. June 23, 1902. 3 colonies. 



Japan, Tosa, Shikoku Island, T. MlTZOBUCHl, Reg. Feb. 1, 1901. 1 colony. 



Japan, from rooting spicules of Euplectella marshalli, Prof. K. MlTSUKURI, Reg. Sept. 23, 



1896. 1 colony. 

 Lifu, Loyalty Islands, A. Willey Coll., Reg. Mar. 1, 1898. Determined by Miss Philipps as 



L. ciliata. 1 colony. 

 Lifu, Loyalty Islands, A. Willey Coll., Reg. Mar. 1, 1898. Determined by Miss Philipps as 



L. hispida. 1 colony. 

 Lifu, Loyalty Islands, A. Willey Coll., Reg. Mar. 1, 1898. Determined by Miss PHILIPPS as 



L. verrucaria. Two slides, 1 colony on each. 



Zoarium reaching a diameter of 3.9 mm. Zooecia quincuncially arranged in the marginal 

 part of the colony, sometimes in uniserial rays centrally; the orifices of those situated in the 

 rays sometimes separated by one or two small cancelli. Peristomes produced on their central 

 sides, pointed like the nib of a pen, or truncate, or fringed into several fine spines. Small 

 pointed spines may also occur on the outer sides of the peristomes or, more rarely, on the 

 septa between the cancelli. Ovicells usually small, their roof porous and covered with irregular 

 ridges, but not by typical cancelli. Ooeciostome a simple tube, terminating in a large, nearly 

 circular ooeciopore. Cancelli not usually separated by narrow, angular septa, their openings 

 variable in size and often much reduced by the development of a cryptocyst; pin-like spines absent. 



Two colonies from the 'Siboga' Collection are included in the list given above. Of 

 these, 568. E. is in poor condition and is very doubtfully referred to the present species. The 

 remaining specimens in the list form a fairly uniform series, in which, however, a certain 

 amount of variation is shown, particularly in the form of the peristomes and in their tendency 

 to become united into rays near the central part of the colony. 



The present species seems to be characterised by having its more marginal zooecia 

 isolated and arranged quincuncially, without any attempt to form radial rows. In the more 

 central part of the colony a few zooecia may be united to form definite uniserial rays, although 

 successive peristomes are usually separated from one another by a small cancellus or more 

 commonly by a pair of these structures. This condition is shown by both the 'Siboga' 

 specimens. In 394. P. (fig. 4) the central border of the peristome is usually elevated into a 

 single point, resembling the nib of a pen, though some of them have the corresponding part 

 of the peristome truncated, with a tendency to develop a short spine from each angle of the 

 truncated end. From this raised central part, the lateral edges of the peristomes slope down 

 to the general level of the surface of the colony, so that the marginal border is not at all 

 raised. A few sharp spines, of no great length, are developed from various parts of the outer 



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