64 HENRY B. BRADY. 
it seems best to take this opportunity to supply the defi- 
ciency. 
CRISTELLARIA, Lamarck. 
Cristellaria Siddalliana, nov.—Test spiral, explanate, with a 
tendency to become centrifugal or crosier-shaped; ex- 
tremely thin, usually surrounded by a broad, delicate 
wing, except the septal or ventral face of the terminal 
segment; the wing often extending between and sepa- 
rating the last two convolutions of the discoidal portion. 
Segments numerous, very slightly inflated, forming two 
or more convolutions, the whole of which are visible on 
both sides of the shell. Longer diameter, ~, inch 
(1:26 mm.) or more. 
C. gemmata, nov.—Test broad, oblong, compressed (Planu- 
larian); earlier chambers spiral and embracing, later 
ones broad and arcuate; each segment ornamented 
with a row of exogenous heads either upon the sutural 
lines or parallel to them. Length, J; inch (1°26 mm.). 
PoLymorpPuina, d’Orbigny. 
Polymorphina longicollis, nov.—Test long-ovate, subcylindri- 
cal or fusiform ; segments few, erect, slightly ventricose, 
the final one hispid externally, and terminating in a 
long neck with phialine lip. Length, 3; inch (0°6 mm.). 
An interesting intermediate link; the general characters 
are those of Polymorphina, the neck and lip essentially 
those of Uvigerina. 
UvicERInA, d’Orbigny. 
Uvigerina spinipes, nov.—Test elongate, subcylindrical, 
slightly compressed on three sides; tapering to a point 
at the inferior end, and armed with numerous spines 
directed downwards. Segments inflated, distinct, some- 
what irregularly combined. Length. = inch (‘77 mm.). 
Saerina, d’Orbigny. 
Sagrina columellaris, nov.—Test long, nearly straight, cylin- 
drical, slightly tapering; inferior extremity round or 
bluntly angular; superior, broad and convex. Uvige- 
rine chambers few, distinct; uniserial segments nume- 
rous, short, very little constricted at the sutural lines. 
Aperture large, simple, with sessile phialine lip. 
Length, =; inch (11 mm.). 
S. bifrons, nov.—Test elongate, compressed, both sides 
slightly concave along the median line; margin thick 
