<54 
Journal of the 
A New Species of Polyzoa. By Ciias. M. Maplestone. 
[With Plate.'] 
[Read 27th November, 1879.] 
Catenicella pulciiella. n. s. Plate V. fig. 4. 
Cells ovate, rather flat, with a row of small bosses or beads 
round the sides and lower portion of the cell; mouth semicircular, 
with a notch in the lower lip; avicularium sub-conical, with a 
small boss or bead underneath ; ovicell galeriform, ornamented 
with bosses and surmounted by two avicularia, geminate, not 
terminal; back of cells sulcate. 
I have only found one small tuft of this, growing on kelp root 
at Williamstown. It is a very interesting form, and does not 
come under any of Busk’s subdivisions of the Catenicella, 1 , the 
ornamentation of the front of cell by raised bosses being peculiar 
to this species. 
On a New Genus of Polyzoa. By J. Bracebridge Wilson, M.A. 
[Read 27tli November, 1879.] 
[With Plate.] 
The genus described below is closely allied to Catenicella , and to 
express that affinity, at Professor McCoy’s suggestion, the name 
Catenicellopsis has been given to it. The two species as yet known 
are separated from Catenicella on the same ground that was 
considered sufficient to justify the separation of Alyddium from 
that genus, namely, the mode of branching. 
Order, Polyzoa infundibulata. Sub-order, Ciieilostomata. 
Family, Catenicelliile. Genus, Catenicellopsis (new 
genus). 
Cells arising, for the most part, from the upper and back of 
other cells, by a short chitinous tube. Cells at each bifurcation 
commonly geminate. Cells also frequently arising, by a short 
chitinous tube, from the side of another single cell, immediately 
below the lateral process. 
I. —Catenicellopsis pusilla. n. s. Plate IV. fig. 1. 
Cells pyriform, attenuated below, posteriorly rounded. Aper¬ 
ture looking upwards and forwards. On each side of the 
