150 BULLETIN: MUSEUM OF COMPARATIVE ZOÖLOGY. 
According to Duncan, the Bowden corals (his Miocene) comprise 
forms common to the Miocene of Europe and species peculiar to the 
Indian seas, while many of the genera now exist in the Pacific Ocean. 
He said that one species of Montlivaltia is found fossil at Travanocore.” 
He also states :* “Corals from Vere, Bowden, and Navy Island off Port 
Antonio have no general resemblance to those from the Eocene and 
Cretaceous strata, but present the appearance of the common speci- 
mens of the various Miocene shales and marls of San Domingo and the _ 
European Miocene ; and all are absent from the existing coral fauna of 
the West Indies. The comparative absence of compound corals from 
the Jamaican Miocene is very remarkable ; and equally interesting, i! 
reference to the deep sea nature of a part of the coral fauna, is the 
abundance of Foraminifera which crowd amongst and fill up the inter- 
stices of the specimen." 
Etheridge states * that twelve of the nineteen species worked out by 
Duncan are common to the Miocene (old usage) of Jamaica and Europe 
while eleven of the species are said to be still living, but Gregory and 
Vaughan cast doubt upon the validity of Duncan's conclusion, as he 
seems to have confused species from the elevated reefs with those from 
entirely different horizons. It may not be out of place to add that this 
fauna is totally distinct in genera and species from another West In 
dian “ Miocene ” coral fauna described by Duncan from Antigua, Dun- 
can has also stated that a majority of these species indicate deep water. 
This fact seems to be borne out by the studies recorded in the ** Three 
Cruises of the Blake.” 
It is an important fact that only three closely related compound 
species of corals, such as composed the elevated and modern reefs of the 
Caribbean region, were found by me in the Bowden beds, and these may 
have been pieces of recent beach débris. "This indicates that true ree 
building corals had not made serious appearance in Jamaica at the time 
of the deposition of these beds. The Bowden corals have been fre- 
quently cited as reef making forms. 
Moore recognized * seventy-one species of marine Mollusca from these 
beds, twenty-eight of which were alleged to occur in the San Doming? 
beds, and twelve of which are living in the adjacent seas. 
1 Quart. Jour. Geol. Soc. London, 1863, Vol. XIX. p. 464. 
2 Ibid., p. 450. 
? Ibid., 1865, Vol. XXI. p.14. 
^ Jamaican Reports, p. 309. 
5 Quart. Jour. Geol. Soc. London, 1808, Vol. XXIV. p. 12. 
5 Ibid., 1863, Vol. XIX. p. 511. 
