197 
Bryozoa of the Bay of Naples. 
the proximal edge, and is ornamented with tine lines round 
the border, corresponding to the teeth of the aperture. Width 
of operculum ‘148 millim., length ‘124, muscular dots *12 
apart. 
70. Cellepora Cutler iana, sp. nov. (PL XIV. figs. 9, 10.) 
Lepralia bispinosa, Busk, Mar. Polyz. p. 77 (pars ?). 
Zoarium incrusting; zooecia irregular; proximal part of the 
peristome much raised and divided, sometimes bearing avicu¬ 
laria on long rostra; below the raised peristome there is 
usually a large avicularium, mostly turning outwards. The 
raised cells are bordered by large pores, some having avicu- 
larian covers. Young cells ovate-quadrangulate; aperture 
round above, nearly straight below, with two horns above the 
aperture. 
I have only one small fragment of this from Naples, and 
the specific description would be more satisfactory if based 
upon more material; but the irregular position of the cells, 
and the gi'eat difference in form of the young and the old 
cells, and affinities with other forms with GWfepora-characters 
would seem to indicate its removal from Lepralia to Celle¬ 
pora ; but, at the same time, the near relationship of the two 
genera and the difficulty of separation is made apparent. 
In looking through the British-Museuin specimens I found 
this marked Lepralia bispinosa , var. a. Cutleriana , and have 
therefore retained this name. The entirely different charac¬ 
ters of the cells in different parts is well shown in the Museum 
specimen. The openings round the cells are very lai’ge; and 
in between, in the same rows, are avicularia about the same 
size. Cellepora digitata , fig. 13, has similar avicularia; nor 
are avicularia taking the place of pores an exception ; and 
these small avicularia are a difficulty for any prehensile 
theory, and rather indicate the same function as the pores, 
some of which have these covers while others are without. 
71. Cellepora digitata , sp. nov. (PI. XIY. fig. 13.) 
Cells much raised, with avicularia and large pore-openings 
in the same line ; peristome divided by four or five clefts. 
Either this or the last species may be C. Larreyi , Aud. (in 
Sav. Egypte, p. G6, pi. viii. fig. 5). 
I have only one piece from Naples, growing on stone (from 
about 20 or 30 fathoms), consisting of two or three layers. In 
consequence of the raised peristome it is difficult to study the 
aperture, as the opercula are lost; but since drawing and 
naming this one 1 have received specimens both from the 
