336 
MELICEBITITES. 
PI. XV. Fig. 5. A thin branch bearing both gonocypt ami 
avicularia, X 10 clia. Middle Chalk: Chatham. Gamble Coll. 
D. 4204. 
PI. XV. Fig. 6. A zoarium with the basal avicularia occurring 
on projecting spines. Fig. 6flr, the whole zoarium, nat. size. 
Fig. 6J, part of a branch, with spatulate, lateral aricularia ; 
X 10 dia. Fig. 6c, a basal avicularium on a lateral spine. 
Chalk : 'Wiltshiix*. Presented by the late P. B. Brodie. D. 2298. 
PI. XV. Fig. 8. Pali: of the base of a zoarium, on an echinid 
fragment; X 10 dia. Middle Chalk: Chatham. Gamble Coll. 
D. 4257. 
Affixities. 
This Bryozoan was first figured by Lonsdale, who identified it 
as Fmtulopora pustulosa, Blv. Lonsdale gave a series of figures, 
one of which (fig. 6g) showed the avicularia ; but the figure was 
imsatisfactory, and has been overlooked : the specimen is accordingly 
rcfigured on PI. XV. Fig. 7. In Lonsdale’s description of the species 
is a clear account of them. “ Connected with some apertures,” he 
says, ‘ ‘ was a long channel which ranged upwards along the surface 
of the branch, and was bounded on each side by a ridge. Xo case 
of an outer coveiing was obseiwed, but as the channels occupied 
the position of ovarian capsules it was conjectured that they might 
have perioiined the functions of these vesicles.” (Dixon, Geol. 
Suss. p. 290.) 
The nearest ally of tliis species is 2Itliceritites dollfusi, Perg., 
which differs by the greater regularity in the arrangement of the 
peristomes, which are Spiroporiform. 
LIST OF SPECIMEXS. 
D. 4204. Two fragments (on slide). The larger specimen shows both a gonocyst 
and the spatulate a-s-icularium. Middle Chalk. Chatham. Gamble 
CoU. Figd. PL XV. Fig. 5. 
D. 2298. A large zoarium of var. doUfusi 'nuth the base (in chalk) ; the 
avicularia on the lower part of the branch project as lateral spines. 
Fpper Chalk. 'Wiltshire. Brodie CoU. Figd. PI. XV. Fig. 6. 
B. 4491. The tjpe of Lonsdale’s FnstuIopora pustulosa, de Blainr. ? fc'Mich. 
Upper Chalk. Sussex. Dixon CoU. Figd. Lonsdale, Dixon, 
Geol. Suss. 1850, pi. iviii. a, fig. ; and PI. XV. Fig. 7. 
D. 4257. Base attached to echinid fragment. Middle Chalk. Chatham. 
Gamble CoU. Figd. PI. XT. Fig. 8. 
