302 EOCENE MOLLUSCA., 
No. 226. Prevuroroma ruexuosa. Minster. Tab. XXXII, fig. 8, a—e. 
PLEUROTOMA FLEXUOSA. Munst. 1835. Leonh. and Bronn, Jahrbuch, p. 449. 
—_— — Goldf. 1826—1844. Petrefacta Germ., vol. iii, p. 21, t. 171, 
fig. 7. 
P. testa elongato-fusiformi, longitudinaliter flecuoso-plicatd, spiraliter lineata : spird 
elatd, sub-conicd : anfractibus depresso-conveviusculis ; postice ad suturam sulco angusto 
ecaratis, lineato-marginatis, nonnunquam granulatis: aperturdé oblongo-ovali, antice in 
canalem breviusculum, ad basin emarginatum, productd ; labro leviter arcuato, ad humerum 
late sinuato ; sinu mediocriter profundo, triangulari. 
A long, narrow, fusiform shell, ornamented with numerous longitudinal plications 
and spiral raised lines; the spire is pointed and elevated, forming almost three fifths 
of the entire length. The whorls, seven without the pullus, are depressedly convex, 
nearly flat-sided, imparting a conical aspect to the spire; the posterior margins are 
rather deeply, but not widely, channeled, and are bordered round the suture by a sharp, 
prominent line, generally simple, but sometimes crenulated by the lines of growth; the 
last whorl is much contracted towards the front, and terminates in a wide and short, 
but distinct, canal, slightly notched at the extremity. The longitudinal plications are 
narrow and curved, and extend from the sutural border to the middle of the whorl ; 
the spiral lines are numerous, slender, nearly equal, and rounded on the surface. The 
aperture is of an oblong-oval form, the outer lip very slightly arched, and the sinus, 
which is on the shoulder, is wide, not very deep, and triangular in shape. 
The present species presents a close analogy with P. Prestwichii, but it is a 
narrower and slenderer shell, with a longer spire and less convex whorls, a straighter 
outer lip, and a shorter anterior canal. Our English specimens agree closely with a 
specimen of P. fleeuosa from Hermsdorf, part of a series from the older Tertiaries of 
Germany, presented by Dr. Wedding to the British Museum. 
Size.—Axis, 8-12ths of an inch; diameter, 3-12ths of an inch, nearly. 
Localities.—Shenfield, Southampton, Clarendon, Highgate? Alum Bay (No. 4, 
Prestw.) German: Sternberg (fide Goldf.), Hermsdorf (fide Wedding). 
No. 227. Pxievurotoma pupoipes. F. £. Edwards. Tab. XXXII, fig. 11, a, 4. 
P. testa elongato-fusiformi, omnino concentrice sulcatd: spird elatd, conoided: anfrac- 
tibus sub-convexis, inermibus, postice cavatis ; ultimo anfractu ad humerum fasciola angusta 
cincto, antice in canalem brevem obliquum prolongato ; sulcis concentricis confertis, regu- 
