REPORT ON THE FORAMINIFERA. 
71 
Sub-family 4. Ramulininse, — test irregular, branching. 
Test branching, composed of spherical or pyriform cham- 
bers connected by long stoloniferous tubes, . . Ramulina, Rupert Jones. 
Family VIII. GLOBIGERINID^E. 
Test free, calcareous, perforate ; chambers few, inflated, arranged spirally ; aperture 
single or multiple, conspicuous. No supplementary skeleton nor canal system. All the 
larger species pelagic in habit. 
Test coarsely perforated ; trochoid, Rotaliform, or sym- 
metrically planospiral ; segments few, inflated ; 
pelagic specimens spinous, .... Globigerina, d’Orbigny. 
Test, having the external form of a single spherical chamber 
with two sorts of perforations, large and small ; 
pelagic specimens usually with very thin shell-wall 
and radiating spines, .... Orbulina , d’Orbigny. 
Test regularly nautiloid, involute ; shell-wall thin, finely 
perforated ; armed with long serrate spines. Aper- 
ture a large crescentiform opening at the base of 
the last chamber. Pelagic, , . . Hastigerina, Wy. Thomson. 
Test regularly or obliquely nautiloid and involute ; seg- 
ments only slightly ventricose. Shell-wall very 
finely perforated ; aperture a long curved slit close 
to the line of union of the last segment with the 
previous convolution, . . . Pullenia, Parker and Jones. 
Segments few, coiled so as to form a nearly globular 
shell ; aperture arched ; sometimes partially closed 
with a valvular tongue, .... Sphceroidina, d’Orbigny. 
Test trochoid ; segments inflated ; shell-wall thin, finely 
perforated. Aperture consisting of rows of pores 
along the septal depressions, . . . Candeina, d’Orbigny. 
Family IX. ROTALIDXE. 
Test calcareous, perforate ; free or adherent. Typically spiral and “ Rotaliform,” that 
is to say, coiled in such a manner that the whole of the segments are visible on the 
