DISCOPORELLID&. 199 
FAMILY—DISCOPORELLID/. 
Zoarium discoid, sometimes confluent, adnate or stipitate. Cells 
distinct or closely connate, intermediate surface cancellated or porous. 
Genus, DISCOPORELLA—Gray. 
Zoarium sessile or adnate ; discoid, centre usually elevated or sub- 
conical, rarely depressed ; cells, horizontal, usually disposed in lines 
radiating from the centre, sometimes irregular. 
D. ciliata, Busk, 1c, p. 31, pl. xxx., f 6. Discoid; cells uni- 
serial, 4-6 in each row; diameter of mouth less than that of the inter- 
stitial cancelli; peristome, much produced on one side, nearly vertical, 
divided into several (2-4) long, acute, slender spines. 
Cape of Good Hope. 
D. novee-zealandie, Busk, loc. cit., p. 32, pl. xxx., f. 2. Dis- 
coid, cupped; cells, tubular, projecting, connate in uni-serial radii ; 
peristome bifid ; central area (unoccupied by cells) depressed ; cancelli, 
large, becoming smaller towards the periphery. 
On Catenicella. (Dr. Lyall.) S. Australia. 
Genus, DEFRANCEIA—D’Orbigny~. 
Zoarium stipitate; capitulum cupped; cells disposed in elevated 
rays extending to the margin of the cup; central portion of cup and 
interserial spaces cancellate ; outer surface of capitulum and stem pitted 
or smooth. i 
D. dentata, ution; T. stellata, C.M.M., p. 103, not of Busk. 
Capitulum broadly expanded, lobed, and curled; cells in elevated 
branching rows, which form a denticulated margin to the lobes ; mouths 
slender, erect, rather closer towards the margin, but ceasing altogether 
before reaching it. 
Stewart Island. 
* The name of this genus is too much like Defranchia (Millet. ) 
