BRYOZOA FROM FRANZ-JOSEF LAND. 93 
CELLEPORA. 
From the genus Céllepora of some years ago, say the time of 
Busk’s British Museum Catalogue, some groups have been 
separated : first the Rhynchopora, Hincks; then I have * shown 
that others should be removed to Lagenipora of Hincks; Lorenz 
has made the genus Rhamphostomella for an Arctic group. 
Jullien ¢ created the genus Osthimosia for species having a fairly 
wide sinus in the oral aperture; and later in the same year+ 
MacGillivray divided the Céellepore into holostomatous and 
schizostomous, leaving those with a nearly straight proximal edge 
in the aperture as Cedlepora, calling the rest Schismopora. The 
Cellepora of MacGillivray is not represented in the Arctic 
regions, and only by one or two species in the Northern hemi- 
sphere, while they are abundant in the Southern. As I have more 
than once pointed out, itis unfortunate that MacGillivray did not 
give a generic name to the holostomatous group, leaving the rest 
as Cellepora to be again reduced as fresh generic characters are 
found. The Céllepora of all the older authors does not remain 
in the genus of MacGillivray, and as the genus Osthimosia was 
earlier than Schismopora, we ought perhaps to accept it, and make 
a genus Holostomata for the Cellepora of MacGillivray. All the 
Cellepore with nearly orbicular apertures, or with a distinct 
sinus in the aperture, have two muscular dots some distance from 
the border. This is a character which does not occur in the 
genus Lepralia, but is general in Schizoporella ; though until the 
genus Schizoporella has been thoroughly worked out, the last 
word cannot be said about the classification of the Celleporide. 
A few so-called Cellepora have been removed to Porella. Hoping 
to be able before long to revise the family Celleporide, it has 
seemed better to leave the three species at present under Cellepora, 
though all may have to be ultimately called Osthimosia, Jull. 
55. CELLEPORA INCRASSATA, Smitt. (PI. 12. figs. 11-14.) 
Celleporaria incrassata, Smitt, “ Krit. Fort.” 1867, pp. 33 & 198, 
pl. xxviii. figs. 212, 216. 
Cellepora incrassata, Smitt, op. cit. 1878, No. 3, p. 20; op. cit. 1878, 
No. 7, p. 29; Hincks, Ann. Mag. Nat. Hist. ser. 4, vol. xix. p. 105; 
Levinsen, Bry. Kara-Havet, p. 324 (20); Nordgaard, “System. fort. over 
de i Norge, hidtil. observ. art. af Mar. Polyzoa,” Bergens Mus. Aarbog, 
* Journ. R. Micr. Soc. 1899, p. 8. 
t+ Mission du Cap Horn, Bryozoaires, p. 64, 
+t Zool. of Victoria, decade xvii. p. 241. 
