HILL : GEOLOGY OF JAMAICA. 147 



epoch than the contributions of the class of writers previously men- 

 tioned. His information was supplemented by the recent field work of 

 Simpson and Henderson and myself. In this paper he describes Guppy's 

 collections, which are accompanied with no information concerning their 

 locality, except that they were collected by Vendryes. We have made 

 inquiries of Mr. Vendryes, through Professor Duerden, concerning the 

 locality of his collections, and he has stated, in a letter dated October, 

 1897, that they were made at Bowden. 



It is sufficient to state, as far as the described species of the so 

 called Miocene and Oligocene Mollusca are concerned, that, instead of 

 having wide and general distribution in Jamaica, they are known to 

 occur in only one or two restricted localities, one of which, Bowden, has 

 furnished all the recorded species. 



In but few other places in the world are fossils so beautifully pre- 

 served, so representative of diverse orders, or so numerous in species, as 

 in the gravels of the Bowden beds at the foot of Captain Baker's hill, 

 Morant Bay. These occur only two or three feet above sea level, in the 

 bluffs of the highway where it starts up the hill. A single barrel of this 

 material, recently collected, has yielded more than three hundred species 

 of marine Mollusca, in addition to land and fresh water species, besides 

 twenty-six species of corals, five species of Foraminifera, and traces of 

 Bryozoa and Echinodermata. 



In the Bowden beds an entirely new foraminiferal fauna appears, and 

 one which occurs under entirely different conditions from those of the 

 Montpelier beds, representing for the second time in the Jamaican history 

 a shallow water foraminiferal fauna. These are of large macroscopic 

 texture, are found in the Bowden gravel beds, and are of contempo- 

 raneous origin with them. Following is a list of the genera collected 

 by me from this horizon at Bowden, as determined by Bagg : — 



Foraminifera. — Haplostiche soldanii (Parker and Jones) ; abundant in 

 Tertiary. Textularia barrettii (Jones and Parker) ; Miocene to Recent. 

 Textularia trochus, d'Orb. ; Cretaceous to late Tertiary, Eecent. Orbicu- 

 lina adunca (Fichtel and Moll) ; Miocene to Recent. Orbiculina com- 

 pressa, d'Orb. ; Miocene to Recent. Cristellaria cultrata (Montfort) ; 

 chiefly Tertiary. Cristellaria cassis (Fichtel and Moll) ; Cretaceous to 

 Recent. Cristellaria calcar (Linne) ; Miocene and Pliocene chiefly. 

 Gypsina globulus (Reuss) ; very abundant in Miocene. Gypsina vesi- 

 cularis (Parker and Jones) ; same range as G. globulus. Cuneolina 

 pavonia, d'Orb. ; Cretaceous (?). Cuneolina sp.; perhaps new. Vaginu- 

 lina legumen (Linne) ; Trias to Recent. Nuramulites ramondi, d'Arch., 



