HILL: GEOLOGY OF JAMAICA. 255 
PLATE XXXII. 
Old Elevated Reef Rock in Contact with Folded Eocene Strata near Barbican. 
PLATE XXXIII. 
Altered Structure of Old Elevated Reef Rock. 
PLATE XXXIV. 
Upland Topography of Jamaica, Montpelier Valley. 
PLATE XXXV. 
Topographie Evolution of Jamaica. 
Fig. 1. Hypothetical Old Land, Pre-Tertiary. 
Fig. 2. Restricted Land during early Tertiary Subsidence. 
3. Mid-Tertiary Expansion. 
Fig. 4 Axes of old Tertiary Uplift, Dotted Lines. Axes of Mid-Tertiary Uplift, 
Solid Lines, 
Late Tertiary Degradation. 
Fig. 6. Drainage of Jamaica. 
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PLATE XXXVI. 
Figs. 1-4, Trochosmilia hilli, sp. nov. Fig. 1, natural size; Fig. 2, calice from 
above, about 1} natural size; Fig. 3, costa magnified; Fig. 4, view 
looking toward the septal margins, magnified, to show striæ crossing 
the septal margins and on the sides of the septa. 
Figs. 5-7. Cladocora jamaicaensis, sp. nov. Fig. 5, section across colony, 8 natu- 
ral size ; Fig. 6, two branches, one showing lateral buds, natural size ; 
Fig. 7, eross-section of corallite, to show septal arrangement, magni- 
fied 24 times. 
PLATE XXXVII. 
Figs. 1-4. Styloconia duerdeni, sp. nov. Figs. 1, 2, general views of specimen, 
natural size; Fig, 8, portions of calices magnified to show pillars at 
their corners; Fig. 4, sections of corallites, magnified about 62 times, 
to show septal arrangement, 
Figs. 5-7. Multicolumnastrea cyathiformis (Duncan), gen. nov. Fig. 5, general 
view of a specimen, natural size; Fig. 6, several calices, enlarged 41 
times; Fig. 7, a calice more magnified, and made slightly diagram- 
matic to show the relations of pali to septa, ete, 
PLATE XXXVIII. 
Fig. 1. Multicolumnastraa cyathiformis (Duncan), gen. nov. Cross-sections of 
several corallites, magnified about 6% times. 
Figs, 2-4, Stiboriopsis jamaicaensis, gen. et sp. nov. Fig. 2, view of corallum 
from above, natural size; Fig. 8, a calice magnified 3 times, shows 
the paliform teeth on the inner edges of the large septa; all the 
septa are not distinct; Fig. 4, cross-section of several corallites, 
magnified about 4} times, shows the abundant dissepiments and 
‘series joined by their coste, 
