MILIOLIDAE—NODOBACULARIA; FISCHERINA. 59 
proloculum and second Cornuspira-like chamber which is found 
throughout the early stages of the Miliolide, from which the irregu- 
lar tubes are developed. These tubes are broad and flattened, and 
may reach to a considerable extent, at least several millimeters. 
Specimens were found in all stages of development, especially on the 
newer portion of the leaves of Posidonia. It is usually one of the first 
organisms to be attached to the leaf, and its growth must be rapid. 
Genus NODOBACULARIA Rhumbler, 1895. 
Nodobacularia tibia (Jones and Parker). 
(Plate 11, Figure 1.) 
Nubecularia tibia Jones and Parker, Quart. Journ. Geol. Soc., vol. 16, 1860, p. 455, pl. 20, 
figs. 48 to 51.—H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, p. 52, pl. 8, 
figs. 1, 2; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 135, pl. 1, figs. 1 to 4. 
Nodobacularia tibia Cushman, Bull. 71, U. S. Nat. Mus., pt. 6, 1917, p. 39, pl. 8. figs. 1, 2. 
The only specimen of N. tibia is a fragmentary one, showing the 
last two chambers with the aperture. The chambers, however, seem 
to be typical and show the occurrence of the species in this region. 
Genus FISCHERINA Terquem, 1878. 
Fischerina dubia (d’Orbigny). 
(Plate 10, Figures 6, 7.) 
Rotalina dubia d’Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. Cuba, 1839, ‘ Foraminiféres,” 
p. 91, pl. 2, figs. 29, 30; pl. 3, fig. 1. 
Test composed of a few coils, the early portion undivided, the last-formed 
coil divided into 4 or 5 chambers, all visible from the dorsal side, from the 
ventral only those of the last-formed coil visible, as the chambers extend into 
the middle at the umbilical region; ventral side somewhat concave, dorsal side 
convex; sutures distinct; wall thin and translucent; aperture at the end of 
the last-formed chamber, usually circular. 
Diameter of the Tortugas specimens up to 0.30 mm. 
Recent specimens of Fischerina seem to be limited mainly to the 
Indo-Pacific. A comparison of d’Orbigny’s figures in the Cuban 
monograph will show that his Rotalina dubia really belongs to 
Fischerina and, allowing for reasonable differences in the figures, 
our specimens from the Tortugas are undoubtedly the same as those 
d’Orbigny had from the shore sands of Cuba and Jamaica. D’Or- 
bigny’s specimens evidently did not show the aperture, as his figure 
does not show this feature and his description refers to it with a 
question mark. From the ventral side Fischerina dubia is nearest 
to F. helix Heron-Allen and Earland, which they described from the 
Kerimba Archipelago. It is not common at the Tortugas. 
Genus SPIROLOCULINA d’Orbigny, 1826. 
Spiroloculina grateloupi d’Orbigny. 
Spiroloculina grateloupi d’Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 298.—Terquem, Mém. 
Soc. Géol. France, ser. 3, vol. 1, 1878, p. 52, pl. 5, figs. 5, 6.—Wiesner, Arch. Prot., 
vol. 25, 1912, p. 208.—Cushman, Bull. 71, U. S. Nat. Mus., pt. 6, 1917, p. 31, 
pl. 4, figs. 4,5; Proc. U. S. Nat. Mus., vol. 56, 1919, p. 634; Bull. 100, U. S. Nat. 
Mus., vol. 4, 1921, p. 396, pl. 78, figs. 4 a, b; pl. 100, fig. 3; figs. 17, 18 (in text). 
Spiroloculina excavata H. B. Brady (not d’Orbigny), Rep. Voy. Challenger, Zoology, vol. 9, 
1884, p. 151, pl. 9, figs. 5, 6. 
