REPORT ON THE FORAMINIFERA. 
599 
liquee, mais sans disque ombilical ; la surface en est tres rugueuse. Spire a peine 
saillante bien marquee par les bordures des leges ; composee cle trois tours, dont le 
premier est en partie masque par des rugosites. Loges comprimees au nombre cle six par 
tour, oblongues, aplaties en dessous ; obliques, borclees tout autour cl’un bourrelet ; en 
dessous elles sont plus particulierement borclees du cote exterieur et ombilical, mais les 
bourrelets sont moins marques qu’en clessus. Ouverture sur le bord des loges clans 
l’ombilie. Couleur blanchatre uniforme. Diametre, ^ cle millim.” (Foram. Cuba, 
French ed., p. 101. The figure PL CXIY. fig. 21 is copied from d’Orbigny’s illustration.) 
It is evident, both from the description and drawings, that the Rosalina linnceana of 
d’Orbigny is a true Globigerina, and nearly allied to Globigerina marginata ; though it 
differs from the latter species in several minor particulars, notably in the form of the 
peripheral edge, which is somewhat thick and square. The general conformation of the 
test resembles that of Discorbina biconcciva and Truncatulina ariminensis, of which 
the present species may be regarded as the Globigerine isomorph. 
I have not been fortunate enough to meet with Globigerina linnceana in the living 
condition, but Cretaceous specimens, presenting almost identical characters, are not un- 
common (PI. LXXXII. fig. 12). Under the name Rosalina canaliculata, Reuss gives a 
good, if somewhat idealised, figure of the Cretaceous form, in his memoir on the Chalk of 
the Eastern Alps ( loc . cit.), and recognises its close affinity to d’Orbigny’s recent species. 
So far as I have been able to ascertain, there is no good ground for their specific separation. 
D’Orbigny’s specimens were found in shore-sands from Cuba. 
Globigerina digitata, H. B. Brady (PL LXXX. figs. 6-10 ; PI. LXXXII. figs. 6, 7). 
Globigerina digitata , Brady, 1879, Quart. Journ Micr. Sci., vol. xix., N. S., p. 72. 
Test spiral, more or less Rotaliform, consisting of from two to three convolutions ; 
earlier chambers small and regular, later segments, especially the final one, elongated 
at their free margins and spreading radially ; aperture usually large and furnished with 
a thickened lip or border. Diameter, ^ytk inch to -^th inch (0'4 to P27 mm.) or even 
more. 
This is a singular modification of the type, in which the earlier chambers preserve the 
subglobular form and normal arrangement, whilst part of those of the final convolution 
are elongated and spreading. In some specimens, generally of small size, the terminal 
segment only is extended, and resembles an outstretched index-finger (PI. LXXX. figs. 
7-9), but in others, two, three, or more segments radiate in a palmate manner. 
Globigerina digitata is, comparatively speaking, a very rare form, and it has never 
been noticed amongst pelagic organisms. A small number of examples occur in bottom- 
dredffinss from three Stations in the South Atlantic and from six Stations in the 
South Pacific. The large specimens (PL LXXXII. figs. 6, 7) are from near the Ki 
