52 
HENRY B. BRADY, 
The shell-wall is finely arenaceous, compactly cemented, 
and nearly smooth on both its inner and outer surface, 
except when irregularity of the exterior is produced by 
sponge spicules only partially incorporated. Length, 
4+ inch (13° mm.) or even more. 
H. monile, nov.—A variety with similar general characters 
to that last described, but differing in its comparatively 
small dimensions and in the form of its segments. The 
segments are short, subspherical, and uniform in size. 
The length of the longest specimen hitherto obtained 
is about + inch (6° mm.). 
H. Normani, nov., has an irregularly constructed test com- 
posed of few spherical segments, of which the earlier 
ones are relatively small, the final one usually very 
large. The orifice is seldom at the apex of the cham- 
bers, but often at some point of the periphery, very near 
to the entrance of the last stoloniferous tube, so that 
the new segment is sometimes put on obliquely, some- 
times at right angles to the previous one, or even, as is 
not unfrequently the case, directed backwards, as a 
result of which, the test assumes a great variety of irre- 
gular forms. Length, 4 inch (8:5 mm). 
TRocHAMMINA, Parker & Jones, 
Of the nautiloid and rotaliform Trochammine only two 
minute species require notice, in addition to those described 
in a former paper. 
Trochammina galeata, nov.—Test nautiloid and symmetrical, 
Tr. 
subglobular or compressed, showing only three seg- 
ments externally, of which the final one constitutes 
much more than half the visible shell. Aperture situated 
on the peripheral face of the final segment, near its junc- 
tion with the antepenultimate; simple, often imme- 
diately below a projection of the shell-wall. Diameter, 
=, inch (0°5 mm.). 
This species resembles Tr. ringens, described in a 
former paper (‘ Quart. Journ. Micr. Sci.,’ vol. xix, N.S.,’ 
p- 57, Pl. 5, fig. 12 a, 6), in many particulars, but it. 
is scarcely so large, and is relatively thicker; its few 
segments, and the disproportionate size and embracing 
contour of the final chamber, are sufficiently distinc- 
tive. 
nitida, nov. — Test regular, rotaliform, compressed , 
superior face nearly flat; inferior convex, somewhat 
excavated at the umbilicus; margin rounded, slightly 
