46 SHALLOW-WATER FORAMINIFERA OF TORTUGAS REGION. 



The original figures of this species given by d'Orbigny show an 

 irregularly spiral test not unUke that figured in the Cuban mono- 

 graph as P. vulgaris. The specimens, however, are not so regular 

 as that figured by d'Orbigny. However, the specimens here figured 

 show a distinct spiral tendency that is evidently not the same as 

 the one referred here to P. acervalis. Such specimens are similar to 

 the figure given by Goes (Kongl. Svensk. Vet. Akad. Handl., vol. 

 19, No. 4, 1882, plate 97, fig. 227), which he referred in 1896 to P. 

 mediterranensis instead of P. farcta var. vulgaris, the name used in 

 1882. This species is far less common than P. acervalis in the 

 region, occurring at but one station, and then rarely. 



GenuslTRUNCATULINA d'Orbigny, 1826. 



Truncatulina rosea d'Orbigny. 



(Plate 14, Figures 3 to 5.) 



Rotalia rosea d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 272, No. 7; Modules, 1826, No. 36. — 

 Parker, Jones, and H. B. Brady, Ann. Mag. Nat. Hist., aer. 3, vol. 16, 1866, 

 p. 24, pi. 3, figs. 7 to 9. 



Rotalina rosea d'Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. Cuba, 1839, "Foraminifferes," 

 p. 72, pi. 3. figa. 9 to 11. 



Truncatulina rosea H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 667, pi. 96. 

 fig. 1. — Flint, Bull. U. S. Fiah Commission No. 484, 1900, p. 416. — Cushman, 

 Proc. Boston Soc. Nat. Hist., vol. 34, No. 2, 1908, p. 30; Carnegie Inat. Wash, 

 Pub. 213, 1918, p. 284; Proc. U. S. Nat. Mus.. vol. 59, 1921, p. 56, pi. 13, figa. 1 to 3. 



Test biconvex, trochoid, dorsal side much convex, ventral side less so; 

 chambers numerous, about 9 or 10 in the last-formed whorl, coarsely punctate; 

 sutures somewhat limbate, oblique on the dorsal side, radiate on the ventral 

 side, forming a central boss following the umbilicus; sutures not depressed, 

 except on the ventral side, the spire of the dorsal side often ornamented with 

 rows of beads projecting above the general surface, in some specimens rising 

 considerably above the surface of the test; the aperture an elongate slit at the 

 inner margin of the ventral side of the last-formed chamber, with a con- 

 siderable lip developed above it; color a beautiful rose-red, especially in the 

 earlier portion, but usually in hve specimens present throughout the test. 



Diameter of the Tortugas specimens up to 0.55 mm. 



This species seems to be peculiar to the West Indian region, except 

 for a record I have given for it from Woods Hole. 



Egger, in 1893 (Abh. kon. bay. Akad. Wiss. Munchen, CI. II, 



vol. 18, p. 397, pi. 16, figs. 4 to 6), recorded T. rosea from ofif West 



Australia, but, except for the reddish color, Httle in his description 



suggests this species, and his figures show something entirely different 



from this definite West Indian species. 



Heron-Allen and Earland (Trans. Zool. Soc. London, vol. 20, 1915, 

 p. 708) record this species also, in the following words: 



"A few typical specimens of this species, one of the few Foraminifera 

 characterized by pink coloration, and hitherto, with the exception of a 

 Gazelle record from West Australia, known exclusively from the West Indian 

 seas. The Kerimba specimens resemble Egger's figure more closely than 

 d'Orbigny 's Module, having a somewhat more depressed shell." 



