84 
OSCULIPOEIDJE. 
D. 4480. Two zoaria of the typical H. ramnlo$us on a slab of chalk. Chalk. 
Near Maidstone. Bowerbank Coll. 
3). 4482. A large irregular zoarium showing reverse surface, with an isolated 
fragment which shows the obverse surface. Chalk. Loc. ? Old 
Coll. 
D. 4506. The base of an asymmetrical young zoarium {Supercytis digitataiorm) 
(on slide). The branches are long and thin. Middle Chalk — zone 
of Micraster cortestudinarium. Chatham. Gamble Coll. 
D. 4507. The base of a rather tall variety with pronounced growth in one 
direction. The stage (on slide). Middle Chalk 
— zone of Micraster co> ttstHdiuarium. Chatham. Gamble Coll. 
B. 4575. A branch showing obverse face. Chalk. Dover. Bowerbank Coll. 
Foreign. 
D. 10,987. Four fragments of branches (in tube). Senonian — Campanian. 
• Riigen. Purchased of Frau Agnes Laur, October, 1906. 
D. 10,988. Three fragments of the same (in tube). Senonian — Campanian. 
Biigen. Purchased of Frau Agnes Laur, October, 1896. 
6. Homoeosolen gamblei, Gregory, 1909. 
Synonymy. 
Homoeosolen gamhlei, Gregory, 1909. New Cret. Bry. : Geol. Mag. dec. v. 
vol. vi. p. 62. 
,, ramnlosusj pars, Lonsdale, 1850. In Dixon, Geol. Sussex, p. 307, 
pi. xviiiB, fig. 4, non figs. 3, 5. 
,, ,, Vine, 1893. Compl. Rep. : Rep. Brit. Assoc. 1892, 
p. 334. 
,, alternatus, d’Orh., Vine, 1893. Ibid. p. 334. 
Truncatula carinata (no« Reuss), pars, d’Orhigny, 1854. Bry. Cret. p. 1058, 
pi. 797, figs. 11-15, non figs. 5-10. 
Homoeosolen carinatus, pars, Vine, 1893. Compl. Rep. : Rep. Brit. Assoc. 1892, 
p. 334. 
Truncatula subpinnata, pars, N'me, p. 334. 
Stipercytis dig itata, pars. Gamble, 1896. Cat. Bry. Chatham, p. 6. 
Diagnosis. 
Zoarium frondescent, of crowded multipinnate branches. The 
branching is irregular ; the branchlets cross and intersect, but 
do not anastomose. 
The back of the distal parts of the branches is traversed by 
longitudinal, fluted, or carinate ridges, which form a strong 
median carina; but this structure may be replaced by trans- 
verse wrinkling in the proximal ends of the branches in old 
specimens. 
