386 SHALLOW-WATER FORAMINIFERA OF TORTUGAS REGION. 
Globigerina squilateralis H. B. Brady var. 
There is a single broken specimen which suggests the variety invo- 
luta Cushman, which I have described from the Philippine region. It 
is, however, too broken to be positively identified. 
An interesting thing about the specimen, however, is that while 
the later chambers are smooth, those of the early coils, which are 
exposed in the breaking of the specimen, show long spines still 
attached. 
Globigerina dutertrei d’Orbigny. 
(Plate 5, Figures 8, 9.) 
Globigerina dutertret d’Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. Cuba, 1839, ‘‘ Forami- 
niféres,” p. 84, pl. 4, figs. 19 to 21—H. B. Brady, Rep. Voy. Challenger, Zoology, 
vol. 9, 1884, p. 601, pl. 81, figs. 1 a to c—Cushman, Bull. 71, U. S. Nat. Mus., 
pt. 4, 1914, p. 8; Proc. U. 8S. Nat. Mus., vol. 59, 1921, p. 55, pl. 12, fig. 7. 
Test rotaliform, generally rounded, very convex on the ventral side, the 
last coil usually consisting of 5 chambers; chambers gradually increasing in 
size, the later ones much inflated; sutures depressed; aperture single, on the 
inner margin of the last-formed chamber in the umbilicate area; color white. 
Length of the Tortugas specimens 0.6 mm. 
Specimens occurred only at the deeper-water station off -Logger- 
head Key Light, in 18 fathoms, and were not noticed in the tow net. 
D’Orbigny originally described this species from Cuba and recorded 
it also from Martinique and Guadeloupe. I have recorded it from 
Montego Bay and Runaway Bay, on the north coast of Jamaica. 
It seems to be widely distributed in deep water. 
Globigerina rubra d’Orbigny. 
(Plate 14, Figures 1, 2.) 
Globigerina rubra d’Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. Cuba, 1839, ‘‘ Forami- 
niféres,’’ p. 82, pl. 4, figs. 12 to 14. 
Test composed of several inflated chambers arranged in an elongate 
trochoid spire of about 3 volutions, each with 3 chambers; walls reticulate, 
with spines in pelagic specimens; aperture an arched opening at the umbilical 
border of the chamber, and in the later chambers this is supplemented by 
two or more nearly circular openings on the upper border of the chamber 
near its connection with the preceding chambers; color of the early chambers, 
sometimes of all the chambers, pink. 
Length of the Tortugas specimens about 0.75 mm.; diameter slightly less. 
D’Orbigny described this species from shore sands of Cuba, record- 
ing it also from Jamaica, Guadeloupe, and Martinique. I recorded 
the species from shallow water off the north coast of Jamaica (Proce. 
U. S. Nat. Mus., vol. 59, 1921, p. 55, plate 12, fig. 6). It occurred 
as few specimens at several stations in the area and was almost 
always found, although not in any great numbers, in the tow nets. 
It is abundant in the deeper water of the Caribbean, Gulf of Mexico, 
and the Atlantic regions. 
