HOIKEOSOLEN. 
89 
D. 2748. 
D. 3072. 
D. 3951. 
ID. 4403. 
D. 4401. 
D. 4406. 
D. 4415. 
D. 4416. 
D. 4481. 
D. 4490. 
D. 7280. 
D. 7314. 
D. 10,974. 
A branch of a zoarium 7 mm. long, with the base of five sub-branches 
on each side. The sub-branches are alternate at the upper end 
and opposite at the lower end. On slide, with a fragment and 
base of H. ramulosns. Middle Chalk — zone of Micraster cortestu- 
dinarium. Chatham. Vine Coll. 
Fragment of a young zoarium. Chalk. Loc. ? Toulmin Smith Coll. 
Three specimens of var. gamblei on flint and one detached. The specimen 
is a form of Snpercytis digitata. Middle Chalk — zone of Micraster 
cortestiidinarium. Chatham. Gamble Coll. Purchased 1898. 
An imperfect zoarium. Upper Chalk. Loc. ? Toulmin Smith Coll. 
A zoarium showing the reverse surface, which is carinate. ? Gravesend. 
J. Brown Coll. 
A very typical pinnatifid branch, with a long stem and four main 
branches. Chalk. South-east of England. Mantell CoU. 
A fragment with the ends of three branches. Chalk. Loc.? Dixon Coll. 
A zoarium showing obverse face and an isolated fragment (in tube). 
The posterior surface is less carinate than usual. Branching 
pinnate. Upper Chalk. Guildford. Capron Coll. 
A zoarium, with strongly keeled reverse. Lpper Chalk. Loc. ? 
Old Coll. 
A small zoarium, with branch of Lesmepora pinnigera, Greg. Chalk. 
Dover. Wetherell Coll. 
Four specimens in chalk ; Dvo show the bases. Chalk. Loc. 
Toulmin Smith Coll. 
A branch showing the reverse surface. It is 5 mm. long and has a 
maximum width of 2*5 mm. There are four branches on one side 
and three and the base of a fourth on the other ; the branches are 
alternate. Middle Chalk or upper part of Lower Chalk. Arreton 
Down, Isle of Wight. Presented by Miss Mary Salter, 
September 29, 1903. 
Base and two long branches (one is 20 mm. long) of a zoarium. 
Upper Chalk. Sussex. J. S. Gardner Coll. 
7. HomcBOSolen disparilis (d’Orbigny), 1854. 
Synonymy. 
Semicytis disparilis, d’Orbigny, 1854. Bry. Cret. p. 1051, pi. 795, figs. 12-15. 
Desmeopora ,, Bucaille, 1890. Bry. Cret. Seine-Inf. ; Bull. Soc. Sci. nat. 
Kouen, vol. xxv. p. 512. 
Semicytis ,, Gamble, 1896. Cat. Bry. Chatham, p; 6. 
? ,, ,, Canu, 1897. Bry. St. Cal. : Bull. Soc. geol. France, ser. 3, 
vol. xxv. p. 749. 
,, ,, Canu, 1900. Bry. Tours: C.R. Assoc, fran^. Av. Sci. 
1899, p. 410. 
,, ,, Canu, 1903. Faune Cr. Villedieu : Bull. Soc. geol. France, 
ser. 4, vol. iii. p. 268. 
Unicytis falcata, Gamble, 1896. Cat. Bry. Chatham, p. 6. 
