HILL: GEOLOGY OF JAMAICA. 139 



Mile Post 74, Falmouth road : — Orbitoides and Xummulites. 

 Highgate, St. Mary Parish: — Orbitoides dispansus; Orbitoides sp. j 

 Textularia; Pulvinulina ; Nummulites. 



Port Antonio, Slide ]S"o. 13 : — Globigerina dutertrei, d*Orb. ; Globige- 

 rina bulloides, d'Orb. ; Miliolina seminulum (Linne), also Catadupa ; 

 Nummulites ; Amphistegina lessonii, d'Orb. (A. hauerii, d'Orb.) ; Orbi- 

 toides fortissii, d'Arch. ; Nodosaria; Vaginulina; Orbitoides papyracea, 

 (Boubee) ; Discorbina. 



This bed is Eocene. 



Port Antonio, Slide No. 23: — Nummulites sp. ; Orbulina universa, 

 d'Orb. ; Globigerina bulloides, d'Orb. ; Heterostegina sp. ; Orbitolites 

 complanata, Lam. 



This bed is Eocene. 



13. Port Antonio: — Nummulites; Amphistegina lessonii, d'Orb.; 

 Orbitoides fortissii, d'Orb. ; Orbitoides papyracea, (Boubee) ; Nodosaria ; 

 Vaginulina. 



This is Eocene. 



Buif Bay " near Tunnel." (Montpelier Formation at base of Section.) 

 — This limestone contains an abundance of Globigerinidae, also many 

 Nodosarise. 



Globigerina : — Truncatulina wuellerstorfi, Schwager ; Eocene to 

 recent. Nodosaria raphanistrum, Linne ; Cretaceous to Tertiary. 

 Nodosaria pauperata^ Cretaceous to Tertiary ; recent. Nodosaria (D) 

 aciculata, d'Orb. Nodosaria farcimen, (Soldani) ; Permian to recent. 



We suspect this to be a Tertiary limestone, since Truncatulina wueller- 

 storfi begins with Eocene beds. The Globigerinidae and Nodosariae 

 prove nothing here, as their range is so great. 



In addition to the localities given, the following have been observed 

 from our own collections. 



Port Antonio (Collection No. 13), a foraminiferal marl made up of 

 Nummulinse and Orbitoides, with one Rotalia-like form. 



Flint beds of Dover (Collection No. 36) : — (1) Section of flint. 

 Mostly opalescent amorphous groundmass, — a few spicules and one 

 Rotalia-like form. (2) Chalk : Globigerinse mostly, with several species 

 of Orbitoides. (3) Another chalk, mostly Rotalia-like forms. 



Belmont, St. Elizabeth, clear crystalline calcite, in which are outlined 

 many Foraminifera, Orbitoides being the predominating form. 



One mile south of Port Antonio, iu upper part of Richmond beds 

 grading into Cambridge. Nummulinae 1 and Orbitoides. 



Flints at foot of Montpelier Hill: — These are incrusted with silicified 



