198 Mr. A. W, Waters on Australian Bryozoa. 



65. Cellepora Mspinataj Busk. 



Cellepm-a Mspinata, Busk, Brit. Mus. Cat. p. 87, pi. cxx. figs. 1, 2. 



A specimen from the mouth of the Lane-Cove River, Port 

 Jackson, growing on Amathia, seems to be this species. It 

 has the spines articulated, as figured by Busk, and the oper- 

 culum is light-coloured. The ovicell, which Was not described 

 by Busk, is globular, granular, arching over the oral aperture, 

 and widely open in front, being very similar to that of 

 C. ovoidea, Aud. The mandibles of the small rostral avicu- 

 laria are semicircular, and in one specimen there are also a few 

 spatulate vicarious avicularia, but I cannot find any in the 

 other specimens. 



This in many respects is very closely allied to G. alhiros- 

 tris, Sm., but is distinguished by the articulated spines, and 

 the operculum is not distinctly indented at the side, although 

 the chitinous band shows a tendency in this direction, and in 

 this respect resembles that of C. mamillata. 



Loc. Tasmania {B.) ; Victoria {MacG.) ; New Zealand 

 [Hutton] ; mouth of Lane-Cove River, 7 fath., rocky bottom. 



66. Cellepora granunij Hincks. 



Cellepora granum, Hincks, Ann. & Mag. Nat. Hist. ser. 5, vol. yiii. 



p. 68, pi. iii. fig. 8 ; Waters, Quart. Journ. Geol. Soc. vol. xxxix. p. 440, 



pi. xii. fig. 18. 

 Cellepora Boryi, Waters, Ann. & Mag. Nat. Hist. ser. o, vol. iii. p. 195. 

 Lagenipora nitens, MacG., " Descriptions," pt. xii.. Trans. Roy. Soc. 



Vict. 1886, p. 2 (sep.), pi. i. fig. 1. 



There is a small specimen from Green Point, growing on 

 Mucronella Elleriij forming a small radiate colony, with thin 

 semitransparent walls, so that the avicularian chamber can be 

 traced as figured by MacGillivray in L. nitens, but where the 

 grov/th is more solid this cannot be done. The bulging ovi- 

 cells at the side have the characteristic flat surface with 

 radiating pores. 



I do not doubt that this is specifically identical with a 

 specimen in my collection from Naples, which I consider to 

 be C. Boryi, and also with a specimen sent me as C. granum 

 from New Zealand, and another sent as L. nitens from Port 

 Phillip. 



I have, however, taken Mr. Hincks's name, seeing that 

 C. Boryi, Aud., C. Costazii, Aud., and C. Protainii, Aud,, 

 may be varieties of the same thing, with which, at any rate, 

 G. granum must be closely allied. It is further closely allied 

 to Lagenipora sjpinulosa, H. (probably G. hicornis of the 

 ' Challenger' Report), and Phylactella lucida, H. 



