HILL: GEOLOGY OF JAMAICA. 153 
Orbitoidos, eto., of the Montpelier and lower beds are entirely absent. To 
this formation belongs the collection of specimens described * by William 
Hill from Mile Gully, Manchester Parish, containing Amphistegina. 
Probably this is the limestone largely composed of Heterostegin® 
from Clarendon Parish, described by T. Rupert Jones,? which he says 
i corresponds to the same horizon as that of the shells and corals 
[Bowden] brought to England by Mr. L. Barrett and lately described 
by Mr. J. Carrick Moore and Dr. Duncan.” 
Bagg reports as follows upon the Foraminifera of limestones collected 
ftom the Cobre formation. 
No. 80. Yallahs : Globigerina bulloides, d'Orb. ; Cretaceous to Recent. 
Orbulina universa, d’Orb. 
The apparent absence of Globigerina cretacea makes it very probable 
that the rock is to be placed somewhere in the Tertiary period, but 
Globigerina bulloides occurs abundantly in many horizons. 
No. 58. Rock Quarry, one mile east of Spanish Town: Amphistegina, 
(also at Bowden); Nodosaria ; Globigerina; Textularia trochus (also at 
9wden) ; Textularia (2 sp.) ; Rotalia or Discorbina. 
No. 62, Retreat, Clarendon, Operculina (1); Textularia (also at 
°wden) ; Cuneolina (1) (also at Bowden) ; Gypsina (also at Bowden). 
9 species of corals have as yet been identified with certainty from 
he Cobre limestone beds. Only two or three imperfect specimens of 
What were apparently simple corals were found in our close examination 
f hundreds of outcrops of this formation, but they were too imperfect 
% Specific identification. They resemble very much the simple forms 
M the Bowden beds. ` 
"nean has reported three species from “the hard white limestone ” 
"hich may have come either from the Cobre formation or the white 
Mestones of the Coastal Series. One of these, Alveopora dedalea is 
Nown to occur in formations of later age than the Bowden beds, in 
Wigua ; another, Oyphastrwa costata, a doubtful species, is said to 
“cur in the Post-Pliooene (presumably Pleistocene) beds of the island 
? Barbuda The third, Astrocenia decaphylla, he says, is a Cretaceous 
: CUM Jour. Geol. Soc. London, 1891, Vol. XLVII. pp. 248, 249. 
(s A ct., pp. 104, 105. 
Bing re costata, Duncan. The type from Barbuda is a piece of the small 
lu. West Indian Orbicella — O. aeropora Linn. (Gregory) O. annularis, Dana, of 
and A late Tertiary or recent age. The otherspecimen, from Santo Domingo, 
abelled Cyphastrea costata, is a Solenastrea, therefore the name Cyphastrea 
Ost 
ig Must be dropped from coral nomenclature. Gregory’s Cyphastrea costata 
Orbicella acropora.”— Vaughan. 
— /—— AA : 
