58 SHALLOW-WATER FORAMINIFERA OF TORTUGAS REGION. 
Family MILIOLIDZ. 
Genus CORNUSPIRA Schultze, 1854. 
Cornuspira involvens (Reuss). 
Operculina involvens Reuss, Denkschr. Akad. Wiss. Wien, vol. 1, 1849, p. 370, pl. 45, fig. 20 
Cornuspira involvens Reuss, Sitz. Akad. Wiss. Wien, vol. 48, 1863 (1864), p. 39, pl. 1, fig. 2.— 
H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 200, pl. 11, figs. 1 to 3.— 
H. B. Brady, Parker, and Jones, Trans. Zool. Soc., vol. 12, 1888, p. 216, pl. 40, 
figs. 1 to 3.—Cushman, Bull. 71, U. S. Nat. Mus., pt. 6, 1917, p. 25, pl. 1, fig. 2; 
pl. 2, fig. 2; Proc. U. S. Nat. Mus., vol. 59, 1921, p. 62. 
Although C. involvens occurs at numerous stations, all the speci- 
mens are of small size and there is nothing at all to compare with the 
species as it is developed in the warm coral-reef region of the Indo- 
Pacific. Both microspheric and megalospheric specimens occur, the 
former with three to four coils, the latter usually with not more 
than two. 
Genus NUBECULARIA Defrance, 1825. 
Nubecularia antillarum, new species. 
Test attached, early portion consisting of a proloculum and one or two 
chambers, forming a single coil, the main portion of the test consisting of an 
irregular branching tube, slightly convex, with an irregular periphery, spread- 
ing over the surface of the test to which it is attached; aperture at ends of 
the branches. 
N. antillarum was first noted attached to Posidonia from Montego 
Bay, Jamaica, in 1912. In the Tortugas region it was found to be 
Fies. 7, 8.—Nubecularia antil- 
larum, new species. 
7. Outline of a medium-sized 
specimen from above, show- 
ing the miliolid young and 
the later branching of the 
chambers. 
8. Ventral view of a young 
specimen, showing the rela- 
tion of the early chambers 
and the beginning of the 
branching. 

very abundant under similar conditions. It is perhaps most like 
Nubecularia tubulosa Heron-Allen and Earland (Trans. Zool. Soe. 
London, vol. 20, 1915, p. 548, pl. 40, figs. 1 to 5), but it differs, 
especially in the early development, their specimens showing a spiral 
young, while in our specimens there is usually nothing more than a 
