132 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
the more extensive exposure at Catadupa where the Rudistes occurred 
in great abundance. From this last collection Dall identified the 
Carolia, hitherto known only in the lowest Eocene of Egypt. 
None of the species of the Cambridge beds excepting the Rudistes 
the gigantic Cerithium (1), an oyster, and a Lucina, have been reported 
before from Jamaica. The eight species of corals identified by Vaugha? 
are entirely distinct from the species hitherto reported from the Rich’ 
mond beds at Port Maria by Duncan; the Spondylide (?), Neritt 
Carolia, and Cyprea are forms which apparently were not found by the 
geologists of the British Survey. Not a single one of the species (de 
scribed or undescribed), is like any of the North or Central America? 
forms, unless it is the small Alectryonate oyster and the Cardita. Som? 
of the corals have European analogues if not specific identity ; the giga!” 
tic Cerithium-like casts are somewhat similar to forms in the Paris 
Basin, while the Carolia, as before stated, is a genus hitherto reported 
from Egypt. 
The Orbitoides of the Chapelton beds, which is a comparatively larg? 
species from five millimeters to a centimeter in diameter, occurs in vast 
numbers in the impure littoral sediments. So abundant are thes 
forms in the parishes of St. Mary, Clarendon, and elsewhere, that the 
formation could well be termed the “ Nodular Orbitoidal Limeston® 
as it was originally designated by Barrett,’ were paleontologic name! 
still in vogue. Jones was the first to note the occurrence: of Orb“ 
toides in the nodular limestone? (our Cambridge beds), No. 4 of Bar 
rett's (Woodward’s) section,® previously specifically reported only in the 
Hippurites limestone by Woodward and Barrett, He remarked that 
“In the Western Hemisphere Orbitoides and Nummulinæ are very ran 
above the Eocene group," and that it may be remarked as a point ? 
interest that the Nummulites and Orbitoides of Jamaica are such * 
are found in South Europe and India. From these nodular Orbitoid? 
limestones Jones reported Orbitoides and three or four Nummulin® 
Concerning these he said:4 “In the Nodular Orbitoidal Limesto™ 
of Jamaica [Cambridge beds, R. T. H.] at the base of the White Lin 
stone, . . . I find a few rather small specimens of the same variety ° 
1 As published by T. Rupert Jones. In the text Jones states that he “ underst0™ 
Mr. Barrett to have informed him that the Orbitoides occurred in nodules in © ^ 
just underneath the great White Limestones.” ^ Quart. Jour. Geol. Soc. Londo 
1863, Vol. XIX. pp. 514, 515. 1 
2 Quart. Jour. Geol. Soc. London, 1863, Vol. XIX . p. 615. 
Geologist, London, 1862, Vol. V. p. 373, 
Geological Magazine, London, 1864, Vol. T. p. 104. 
