82 SHALLOW-WATER FORAMINIFERA OF TORTUGAS REGION. 
I have recorded it from the north coast of Jamaica, and it seems 
to be much more abundant in the West Indian region than either 
O. marginalis or O. complanata. In this connection it is of interest 
to note that Millett, in his paper on the Foraminifera of the Malay 
Archipelago, notes both O. marginalis and O. complanata as common, 
but entirely leaves out O. duplex. All three were found, however, in 
the Philippine collections which I have studied. 
Genus ALVEOLINA d’Orbigny, 1826. 
Alveolina pulchra d’Orbigny. 
Alveolina pulchra d’Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. Cuba, 1839, “‘ Forami- 
niféres,”’ p. 70, pl. 8, figs. 19, 20.—Cushman, Proc. U. S. Nat. Mus., vol. 59, 1921, 
p. 77, pl. 19, figs. 7 to 9. 
Specimens of this small Alveolina were found at a few stations. 
It may be that it is the same as A. melo (Fichtel and Moll), but 
specimens do not seem to be entirely identical with those from other 
regions, I have recorded it from the north coast of Jamaica; 
d’Orbigny’s type material was from Cuba. 
