34 SHALLOW-WATER FORAMINIFERA OF TORTUGAS REGION. 
Polymorphina gibba d’Orbigny. 
(Plate 4, Figure 9.) 
“Polymorphina Subcordiformia vel Oviformia’’ Soldani, Testaceographia, vol. 1, pt. 2, 
1791, p. 114, vol. 113, figs. zz, C, etc. 
Polymorphina (Globulina) gibba d’Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 226, No. 20; Mo- 
déles, 1826, No. 63.—Egger, Neues Jahrb. fiir Min., 1857, p. 288, pl. 13, figs. 1 to 4. 
Polymorphina gibba H. B. Brady, Parker, and Jones (part), Trans. Linn. Soc. London, 
vol. 27, 1870, p. 216, pl. 39, figs. 2 a to d—H. B. Brady, Rep. Voy. Challenger, 
Zoology, vol. 9, 1884, p. 561, pl. 71, figs. 12 a, b—Cushman, Bull. 71, U. 8S. Nat. 
Mus., pt. 3, 1913, p. 85, pl. 41, fig. 4. 
Test rotund, front view nearly circular, end view broadly oval; visible 
chambers few, broad; sutures slightly excavated; wall smooth; aperture 
somewhat produced. 
Length of the Tortugas specimens not over 0.5 mm. 
There are single specimens from two stations which may be re- 
ferred to this species. 
Polymorphina lactea (Walker and Jacob) var. 
(Plate 4, Figures 10, 11.) 
There are a few specimens of a small rounded form with a slightly 
roughened surface which I have referred to this species. They are 
not typical, however, the rough surface seeming to be constant, and 
one of the specimens which is here figured (plate 4, fig. 10) is attached 
to a calcareous fragment by slight stolon-like processes. 
Polymorphina sp.? 
(Plate 4, Figure 4.) 
There is a single specimen which is here figured (plate 4, fig. 4), 
with a smooth surface, generally fusiform shape, and few-chambered, 
which, in the absence of further material, I have not wished to place 
under a specific name. 
Polymorphina sp. 
(Plate 5, Figure 1.) 
The specimen figured (plate 5, fig. 1) may possibly be related to 
the preceding and may be only an irregular specimen. Under these 
conditions it does not seem warranted that this should be placed 
under a definite name. 
Genus UVIGERINA d’Orbigny, 1826. 
Uvigerina angulosa Williamson. 
(Plate 5, Figures 3, 4.) 
There are a few specimens which can be referred to this species. 
They are small, and, as shown by the specimen figured (plate 5, 
fig. 4), there is a tendency in the later development for the chambers 
to become more remote than in the early development. At the same 
time, the characteristic ornamentation of longitudinal coste seems 
to be lacking in these last-formed chambers. The specimens are 
all small, not exceeding 0.5 mm. in length. 
