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126 BULLETIN: MUSEUM OF COMPARATIVE ZOÖLOGY. 
Port Maria. Dunean and Wall have also reported ono species of Eocene 
coral from the black shale of the Blue Mountain Series from the valley 
of the Yallahs River on the south side of the island, east of Kingston.’ 
Etheridge? also mentions a Melania and a Turritella from these beds. 
A small Modiola has also been found in the formation at Arthur's Seat. 
When the impure turbulent conditions of the sediments are considered, 
which are very similar to those of the Lignitic group of our Southern 
States Eocene, this scarcity of fossil remains is not surprising. Plant 
remains occur nearly everywhere in the lamine of the clays. 
In all, the following species have been reported from the Richmond 
beds : — 
Paracyathus crassus, Ed. & H.;? Stylophora contorta, Leym. ;* 
Stylocomnia emarciata, Lam. (Duncan),* = St. duerdeni, Vaughan; 
Columnastrea eyeri, Dunc.;* Modiola, sp.;5 Melania;* Turritella;?* 
Scalaria;* Rudistes;*% Caprinella;*% Acteonella;*% Natica phasia- 
nelloides. 
The supposedly Eocene corals of Duncan, with one exception, were 
found in the gravel and shale beds of the Richmond formation at Port 
Maria. They are depauperate forms, which apparently gained foothold 
with difficulty in the disturbed and muddy waters of the Richmond 
epoch. Concerning these Duncan and Wall” wrote as follows : — 
“The specimens from Port Maria are either dark and carbonaceous- 
looking, or are encrusted on a fine dark purple conglomerate ; all are 
very significant of the horizon, and recall the puny development of the 
species of the London Clay. "The Paracyathus from Yallahs Valley re* 
sembles that of the London Clay, being even stained black, like the 
Sheppy specimens ; the Stylocenia emarciata is a well known form in 
British, French, Italian, and Sindian early Tertiary collections, and the 
Stylophora contorta also. The Stylocoenia and Stylophora are character: 
istic corals, and denote an Eocene horizon; and they indicate, when 
unaccompanied by other species, the existence of physical conditions not 
favorable for coral growth." i 
Vaughan has described Duncan’s Stylocænia emarciata as Stylocænid 
1 Paracyathus, sp. Quart. Jour. Geol. Soc., Vol. XXII. p. 8. 
2 Jamaican Reports, p. 311, ? Upper Valley of Yallahs River. 
1 Point Haldane, Port Maria. 5 Arthur's Seat, Clarendon, 
5 Reported by Etheridge (Jamaican Reports, p. 311), who surmised that they 
were derived from “Hippurite limestone below." No “ Hippurite" limestone 1$ 
known to occur below the beds at Port Maria, or within any reasonable distance. 
7 Quart, Jour. Geol. Soc. London, 1864, Vol. XXI. p. 13, 
