of Edinburgh, Session 1881-82. 
715 
nearly even diameter, built up of short sponge-spicules laid 
side by side, and forming irregular, more or less interlacing 
tiers. The largest specimen is about a quarter of an inch (6 
mm.) in length, and inch (0T7 mm.) in diameter, but such 
pieces can only be regarded as fragments of an organism that 
may be developed almost indefinitely. The species is mani- 
festly closely related to Marsipella elongata , with which it is 
found associated. Similar fragments occur in one or more of 
the “Porcupine” dredgings, and less characteristic specimens 
at two of the “ Challenger ” stations. 
Reopliax difflugiformis , Brady. — There seemed a possibility that 
this species might turn out to be only the primordial chamber of 
R. scorpiurus , but as it exists in abundance in one of the dredgings 
(D) in which no specimen of the latter has been found, it is evident 
that it holds an independent position. 
Reopliax adunca , nov. — Test moniliform, consisting of a crooked 
line of inflated segments, irregular in size, but of nearly equal 
diameter. External constrictions between the segments com- 
paratively slight ; walls thin, rough externally. Length inde- 
finite, specimens seldom found with either end entire; those 
which have been measured are about t l inch or 2 mm. 
Reopliax sdbulosa. — This is the Reopliax rudis of a previous paper 
(Quart. Jour. Micr. Sci., vol. xxi. n. s. p. 49). The specific term 
rudis being preoccupied by a distinct form, figured by Costa as a 
Nodosaria, an alteration of name becomes necessary. 
Haplophragmium tenuimargo , nov. — Test elongate, crosier-shaped, 
much compressed ; lateral edges very thin. Spiral chambers 
few and small ; linear segments about six in number, broad, 
slightly convex ; septation obscure ; aperture simple, irregular 
in form, terminal ; texture coarse, surface extremely rough. 
Length of largest specimen, T y inch or 2'5 mm. 
This is a somewhat rare species. Specimens have been met with 
at five of the “Challenger” stations in various parts of the world, 
at depths varying from 1000 to 3950 fathoms, but never more than 
one or two specimens from a locality. 
Textularia asp era, nov.' — An obscure few-chambered Textularian, 
with a loosely-made arenaceous test, not uncommon in some of 
