50 HENRY B. BRADY. 
R. distans, nov.—A thin-shelled, dark-coloured form, never 
found entire. Segments distinct, fusiform, tapering 
nearly equally at the two ends into stoloniferous tubes, 
which are long and slender in proportion to the bulk 
of the chambers they unite. Specimens with three 
chambers, which are the largest hitherto found, have a 
length of nearly 4 inch (4°8 mm.). 
HAPLoPHRAGMIUM, Reuss. 
Of the section embracing the nautiloid, crozier-shaped 
and rotaliform Ztwole, there are amongst the ‘ Chal- 
lenger ” collection five species distinct from any hitherto 
described, in addition to several that may be left for the 
present as more or less doubtful. 
Haplophragmium foliaceum, nov., has a very beautiful and 
delicate, crozier-shaped test, flat on both sides, and so 
thin as to be almost transparent. ‘The segments are 
numerous, short and broad, and the peripheral margin 
is slightly constricted at the sutures. Length, J, inch 
(1:3 mm.). 
Hi. rotulatum, nov.—A sandy isomorph of Anomalina coro- 
nata, nautiloid in contour and biconcave; the um- 
bilicus is deeply sunk on both faces, and the periphery 
broad and square, often somewhat oblique. Diameter, 
¢@ inch (0°6 mm.) or less. 
H. scitulum, nov.—Test nautiloid, excavated at the umbi- 
licus, rounded at the periphery; composed of two to 
three convolutions, the outermost consisting of from 
eight to eleven segments only partially enclosing the 
earlier ones. Segments compactly fitted, with little 
or no depression at the sutural lines. Shell-wall finely 
arenaceous, nearly smooth externally, and of clear 
yellow-brown colour. Diameter, =; inch (0°8 mm.). 
H. turbinatum, nov.—Test rotaliform, subglobular, depressed 
at the umbilicus; consisting of less than two convolu- 
tions. Segments somewhat ventricose ; numbering about 
six in the peripheral whorl. Diameter, ;4, inch (0°75 
mm.). 
This form resembles H. subglobosum in size and tex- 
ture, but differs from it in being rotaliform and unsym- 
metrical, not nautiloid. 
Hi. nanum, TSM: miuute, rotaliform, depressed ; superior 
face somewhat convex; inferior, plane, more or less 
excavated at the umbilicus; margin rounded, lobulate. 
Consists of about two revolutions, each composed of 
