154 
Rev. T. Hincks on tne 
Fam. 2. Eucrateidse. 
This family includes the whole of the Gemellariida ?, Busk, 
except Notamia , an anomalous genus and type of a separate 
group, and Didymia , in which we find a totally distinct form 
of cell. Eucratea , the oldest genus, and one in which the 
family characters are strikingly represented, has been adopted 
as the type. 
Genera: Eucratea, Lamx. 
Gemellaria, Savigny. 
Scruparia, Hincks. 
Zoarium erect, branches given off from the back of a cell, 
and facing in the opposite direction. Zooecia subcalcareous, 
rising one from the other, so as to form a single series, or 
placed back to back; aperture small, unarmed, slightly ob¬ 
lique, terminal. Ovicelliyerous cells imperfectly developed, 
placed back to back with the ordinary cells. No avicularia 
or vibracula. 
Type Scruparia clavata , Hincks. 
1 have retained Oken’s name Scruparia , with a new defini¬ 
tion, for this form ; it has been superseded by Eucratea , Lamx., 
and would otherwise lapse altogether. 
Huxley a, Dyster. 
(With revised character.) 
Brettia, Dyster. 
Brettia tubceformis , nov. sp. 
Zoarium minute, transparent, dichotomously branched, sur¬ 
face smooth, attached by a number of tubular fibres. Zooecia 
elongate, somewhat trumpet-shaped, slender and tubular be¬ 
low, and expanding gradually upwards, with a distinct joint 
a little above the base ; aperture terminal, slightly oblique, 
suborbicular, with about ten short spines round the margin. 
Ooecia unknown. 
Height about i inch. 
Localities. South-east coast ( R . S. Boswell) : Hebrides 
[Norman ]. 
Fam. 3. Cellulariidae. 
Genera : Cellularia, Pallas. 
Menipea, Lamx. 
Scrupocellaria, Van Bcneden. 
Caberea, Lamx. 
