MILIOLIDAE—ARTICULINA; HAUERINA. 71 
off the north coast of Jamaica, and it has occurred at several stations 
in the Tortugas, but is rare at all of them. Il may be distinguished 
from A. sagra by its much greater compression and the great dif- 
ference in shape, especially in the uniserial portion, due to the fact 
that the lip is not everted, and therefore the start of each chamber 
is not greater than that of the preceding to any amount. 
Articulina antillarum, new species. 
(Plate 12, Figure 5.) 
Test elongate, early portion in the microspheric form milioline, in the 
megalospheric form Cornuspira-like, the remainder and larger portion of the 
test made up of a linear series of elongate chambers gradually increasing in 
size toward the apertural end; chambers truncate at the distal end, then 
somewhat fusiform, and the apertural end fitted with a broadly flaring lip; 
aperture circular, without a lip; surface of the chambers with several rounded, 
longitudinal coste. 
Length up to 2 mm. 
Specimens of A. antillarwm were found at a few stations, usually 
not in any considerable numbers. They resemble somewhat speci- 
mens referred to Articulina conico-articulata by Millett (Journ. Roy. 
Mier. Soc., 1898, plate 12, figs. 9, 10), but have a very different 
shape and appearance. They are very close to some of the speci- 
mens referred to this species by Heron-Allen and Earland from the 
Kerimba Archipelago (Trans. Zool. Soc. London, vol. 20, 1915, plate 
45, figs. 29, 31). Our specimens, however, have a much longer test, 
and their general appearance is somewhat different. There seems to 
be a difference in the form and shape of the chambers in the two 
forms, the megalospheric being less fusiform than in the microspheric. 
Articulina mayori, new species. 
(Plate 13, Figure 5.) 
Test elongate, slender, early portion milioline, later chambers elongate, 
fusiform; surface faintly striate; apertural end contracted, with a distinct, 
everted lip; aperture circular. 
Length 1 mm. or slightly more. 
This is a very slender, delicate species, easily broken, and found, 
probably for this reason, in the material from but two stations. It 
is very different from the preceding in all its characters, reminding 
one somewhat of the specimens referred by Brady in the Challenger 
report to Articulina conico-articulata (plate 13, fig. 1). No speci- 
mens with coiled young were found in this species. 
Genus HAUERINA d’Orbigny, 1846. 
Hauerina bradyi Cushman. 
Hauerina compressa H. B. Brady (not H. compressa d’Orbigny), Rep. Voy. Challenger, 
vol. 9, 1884, p. 190, pl. 11, figs. 12, 13. 
Hauerina bradyi Cushman, Bull. 71, U. S. Nat. Mus., pt. 6, 1917, p. 62, pl. 23, fig. 2; Proo. 
U.S. Nat. Mus., vol. 59, 1921, p. 72. 
