310 CANON A. M. NORMAN ON THE POLYZOA 



surface imperforated. Oral opening with two small round avicularia, usually 

 almost sessile, but sometimes raised on a pedicil of moderate length ; often 

 there is only a single oral avicularian and this seems to be generally the case 

 when an ocecium is present. Ooecium having a frontal punctated area. 

 Large spatulate avicularia (fig. 13) are scattered freely over the zoarium, and 

 are often present in extraordinary numbers. The operculum is figured 

 (fig. 12). The oral avicularia are easily abraded and dead specimens will 

 often show no sign of them. 



Dredged not uncommonly at Madeira in about 70 fathoms. 



This species is evidently allied to C. rudis of Busk (' Challenger' Polyzoa, 

 p. 199, pi. xxviii. fig. 7, and pi. xxxvi. fig. 7), which was dredged in 600 

 fathoms, lat. 37° 17' S., long. 53° 52' W. ; but it would seem to differ in the 

 much smaller size of the oral avicularia. 



Cellepora ramulosa [Linni). B., W. 



Common in rather deep water, but only small specimens occur, never 

 large clusters such as are found on the British coast. 



Cellepora dichotoma, Hinchs. W. 



Recorded by Waters as Madeiran. In the Johnsonian collection I found 

 some specimens named C. dichotoma, which were a delicate, slender form of 

 C. ramulosa. 



Cellepora ampullacea, Busl:. B. 



]861. Cellepora ampullacea, Busk, Quart. Jouru. Micr. Sei. vol. ix. p. 78, pi. 32. 

 %. 4. 



I have not succeeded in finding the type specimen, but I should very much 

 doubt its being a mature form. 



Cellepora armata, Hinchs. 



C/ommon, growing in an erect form with branches, the whole massive. 

 Found down to 70 fathoms {A. M. N.); Porto Santo {De Noronha). 



Cellepora sardonica, Waters. W. 



1879. Cellepora sardonica, Waters, "Bryozoa Bay of Naples," Ann. & Mag-. Nat. Hist. 



ser. 5, vol. iii. p. 196, pi. 14. figs. 2, 6, 6«, 6. 

 1885. Cellepora sardonica, "Waters, " Use of Avicularian Mandible in determination of 



species," Quart. Journ. Micr. Sci., Zool. ser. 2, vol. viii. pi. 14. fig. 33. 

 1899. Cellepora sardonica, Waters, " Bryozoa from Madeira," Journ. Roy. Micr. Soc. p. 12. 



Recorded by Waters. 



None of the following species can remain, I think, in the genus Cellqjora. 



