RANELLA. 91 
Creusia in having the body of the shell, i. e. the parietal cone 
simple, not divided into valves. P. fig. 31. 
PYR’'GOPOLON. De Montfort’s figure of this genus appears as 
if it had been drawn from the nucleus of a Belemnite. 
PY’RULA. Lam. (A little pear.) Fam. Canalifera, Lam. Siphon- 
ostomata, Bl. Descr. Thin, oblong, pyriform, ventricose 
towards the spire, gradually tapering towards the anterior of the 
aperture; spire short, consisting of few volutions; aperture 
wide, terminating in a long, narrow, open canal; outer-lip thin, 
columella smooth, elegantly tortuous. Obs. The above descrip- 
tion includes all the true Figsshells, which present a most grace- 
ful form; the contour partaking of the peculiar curve, called by 
painters, the line of beauty. P. Ficus, fig. 390. 
QUINQUELOCULIN’A. D’Orbigny. A genus of microscopic 
Foraminifera. 
QUADRATE. (Quadratus, square.) Squared or quadrated, Ap- 
plied to straight lines meeting at right angles, in the contour of 
shells or their parts. 
RA’DICATED. (Radiz, a root.) Attached, and as it were rooted 
by means of a fibrous byssus. 
RA’DIOLA’TA. Lam. A family belonging to the order Cepha- 
lopoda, Lam. containing the genera Rotalina, Lenticulina, Pla- 
centula. 
RA’DIOLITES. Lam. A genus of Rudistes, differing from 
Spherulites, in both valves being more conical. 
RA’DIUS. Montf. A genus composed of Ovutum Volva, fig. 442. 
and other similar species, having a long, attenuated canal at each 
extremity. 
RA’DIX. Montf. A genus consisting of species of Lymnma, hav- 
ing a short spire and wide aperture. Ex. L. aperta, fig. 309. 
RAMPHIDO'’MA. Schum. Po.tuicrees, Auct. 
RA’MOSE. (Ramosus, branched.) Spread out into branches. Ez. 
Murex inflatus, fig. 395. 
RANEL’LA. (From Rana, a frog.) Fam. Canalifera, Lam. 
Siphonostomata, Bl. Descr. Oval, or oblong, depressed, thick, 
with two rows of continuous varices, skirting the outline, one 
on each side; spire rather short, pyramidal, acute; aperture 
oval, terminating ina canal at each extremity ; outer-lip thick- 
ened within, crenulated, or denticulated, forming an external 
varix; inner-lip spread over a portion of the body whorl. 
Obs. The shells composing this well defined-genus, are for 
the most part covered with tubercules and granulations, and 
from the colour and squat shape of some species, have been 
likened to frogs. The Ranelle are mostly inhabitants of the 
East Indian Seas. The few fossil species known, occur in 
London clay. The two continuous rows of varices skirting the 
spire, distinguish this genus from Triton, which it nearly ap- 
