260 
ZOOPHYTOLOGY. 
Notes on two New Britisu Potyzoa. 
By Frep. D. Dyster, F.1.5. 
Sub-class. P. GyYMNOLAMATA. 
Order. CHEILOSTOMATA. 
1. Fam. Bicrttariap#&, Busk (‘ B. M. C.,’ Part I, p. 41). 
1. Gen. Huzleya, nov. gen., mihi. 
Polyzoary flexible, corneous or sub-calcareous. Cells biserial, pyriform, 
alternate. Aperture sinall, sub-terminal, unarmed. No avicularia or 
vibracula. 
1. Sp. #. fragilis, n. sp. Pl. XXI, figs. 1, 2. Sp. unica. 
Hab. Tenby, Dyster. 
The polyzoary, in this species, is from half an inch to one 
inch high, flexible, and white. The cells wider and rounded 
above, attenuated below; the upper portion of one being 
closely appressed to the slender lower part of the cell above. 
The dichotomous branches usually spring from the upper 
and back part of a cell, and occasionally, though rarely, 
from the middle or side. The aperture is small, rounded or 
semicircular above, and straight below. The margin is 
wholly unarmed, and not thickened. No vibracular or avi- 
cularian organs exist in any part. The ovicells have not 
been observed. The polypide i is ten-armed. 'The species was 
first noticed by me in a marine aquarium. 
2. Fam. Scrupariap®, Busk (‘ B. M. C.,’ Part I, p. 28). 
2. Gen. Brettia, nov. geu., mihi. 
Polyzoary erect, free, corneous, flexible. Branches given off behind and 
above the aperture of a cell. 
2. Sp. B. pellucida, n. sp. Pl. XXI, figs. 3—5. 
Hab. Tenby, Mrs. Brett ; Dyster. 
The polyzoary, about half an inch high, is perfectly trans- 
parent ; the cells are much elongated, fistular, with an oval 
aperture, rounded above, pointed below, and furnished with 
from five to nie marginal spines, irregularly placed. The 
polypide has ten arms; and the ovicells haye not been ob- 
served. This species was also first noticed in a marine aqua- 
rium by Mrs. Brett. 
It is singular that neither of the foregoing forms should 
