HOMCEOSOLKJf. 
81 
D. 2831. 
D. 7105. 
D. 4576. 
5439. 
60,251. 
60,341. 
B. 69. 
B. 103. 
D. 394. 
D. 403. 
D. 404. 
D. 406. 
D. 462. 
D. 498. 
D. 667. 
A young zoarium, of which the species is not certain, hut is probably 
H. ramulosiis. Chalk detritus. Charing, Kent. Professor T. E. 
Jones Coll. Fig. 26, p. 79. 
A small branch with longitudinal and transverse sections cut from it. 
Upper Chalk. Beachy Head. Presented by Dr. J. W. Gregory. 
Longitudinal section. Fig. 27, p. 79. 
A zoarium on which has grown a young lamellihranch. Upper Chalk. 
Loc. ? (probably south-east of England). Old Coll. Figd. PI. IV. 
Figs. 2a, b. 
A young ramulosiis with six radial branches and short alternate 
sub-branches. The specimen shows the whole obverse celluliferous 
surface ; the longest branch is 13 mm. from the centre. The 
branches radiate horizontally from a short stem, 1 mm. in dia. 
and slightly over 1 mm. high. The average diameter of the 
main branches is 1mm.; of the branchlets about *4 mm. Chalk. 
South-east of England. Mantell Coll. 
A large, irregular, loosely branched frond ; it is 52 mm. high ; most 
of it shows the obverse surface, but some of it the reverse, which 
is carinate. Chalk. Loc. ? Dixon Coll. 
A broken zoarium and a longitudinal section cut from it ; the reverse 
side has a blunt ridge. Upper Chalk. Sussex. Dixon Coll. 
Three young zoaria. Chalk. Sussex. J. S. Gardner Coll. 
Two large branched stems showing obverse and reverse surfaces ; one 
is 18 mm. high and 15 mm. wide. The small pores are seen on the 
well-preserved parts of the zoarium. The reverse surface is strongly 
carinate. Chalk. Stocker’s Head, north-east of Charing, Kent. 
Professor T. K. Jones Coll. 
Two very small zoaria of form Supercytis digilata (on slide). Middle 
Chalk — zone of Micraster cortestudinarium. Chatham. Gamble 
Coll. 
Three branches showing obverse and reverse faces (on slide). Middle 
Chalk — zone of Micraster cortestudinarium. Chatham. Gamble 
Coll. 
Three older zoaria of form Supercytis digitata, one with broad basal 
attachment (on slide). One specimen has typical ramulosiis 
branching and thick branches. Middle Chalk — zone of Micraster 
cortestudinarium. Chatham. Gamble Coll. 
Three fragments with hooked branches (on slide). Middle Chalk' — 
zone of Micraster cortestudinarium. Chatham. Gamble Coll. 
A branch 30 mm. long partly encrusted by Membranipora. Middle 
Chalk — zone of Micraster cortestudinarium. Chatham. Gamble Coll. 
Fragment of a young specimen presenting the obverse surface. 
Middle Chalk — zone of Micraster cortestudinarium. Chatham. 
Gamble Coll. 
Two fragments with very sharply pointed, rapidly tapering sub- 
branches, showing obverse and reverse faces (on slide). Middle 
Chalk — zone of Micraster cortestudinarium. Chatham. Vine 
Coll., Ko. 73. Eecorded as Homocosolen {Tiuncatula) aculeata. 
G 
