MILIOLIDAE—QUINQUELOCULINA. 65 
D’Orbigny’s Q. lamarckiana can hardly be distinguished from Q. 
auberiana, although the latter name has been more commonly used. 
In the Tortugas material this species is often abundant, and con- 
sists of two forms. In one of these the angle of the test is acute, the 
surface smooth and very shiny. In the other the angle is blunt or 
even slightly truncate, and the surface dull. It may be that these 
represent two distinct species in the region. Brady evidently con- 
fused this with Q. cuvieriana, which has supplementary carine near 
the peripheral angle of the test. This species, as figured in the 
Challenger Report, lacks these. D’Orbigny described Q. lamarckiana 
from Cuba and Jamaica, and his records for Q. auberiana are from 
Cuba and Martinique. I have had the species from the north coast 
of Jamaica, and it is apparently widespread in the West Indian 
region, and perhaps in the Indo-Pacific. 
Quinqueloculina levigata d’Orbigny. 
(Plate 13, Figure 2.) 
Quinqueloculina levigata d’Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 301, No. 6; in Barker, 
Webb, and Berthelot, Hist. Nat. Isles Canaries, 1839, vol. 2, pt. 2, ‘ Foraminiféres,”’ 
p. 148, pl. 3, figs. 31 to 33. 
At a number of stations there are elongate, smooth specimens 
with a shining surface which may be referred to Q. levigata d’Orbigny. 
They are as a rule larger than Triloculina oblonga (Montagu), which 
they somewhat resemble, but the chambers are more uniform in their 
width and the specimens are Quinqueloculina. 
Quinqueloculina candeiana d’Orbigny. 
(Plate 13, Figure 1.) 
Quinqueloculina candeiana d’Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. Cuba, 1839, 
“Foraminiféres,” p. 170, pl. 12, figs. 24 to 26. 
Test nearly twice as long as broad; chambers distinct from one another; 
sutures sharply marked; chambers triangular in transverse section, the periph- 
ery sharply keeled; wall smooth, shiny; aperture comparatively small, with 
a simple tooth, extending somewhat above the outline of the aperture. 
Average length of the Tortugas specimens 0.60 mm. 
These specimens seem to be identical with that described by d’Or- 
bigny in the Cuban monograph. The angled periphery of the cham- 
bers stands out sharply and, with its outline, distinguishes it from 
any other species in the region. 
Quinqueloculina collumnosa, new species. 
~ (Plate 10, Figure 10.) 
Miliolina cuvieriana Heron-Allen and Earland (not d’Orbigny), Trans. Zool. Soc. London, 
vol. 20, 1915, p. 571, pl. 4, figs. 33 to 36. 
Test slightly longer than broad; chambers somewhat indistinctly marked 
from one another, the periphery angled and projecting, the last-formed 
chamber extending out beyond the outline of the test at both ends; chambers 
somewhat undulate; wall smooth, dull; apertural end much contracted, ex- 
