I4S 
Call on a new Lhnna-id. 
of these forms eopies of the figures are given below - 
*nd 6; and the following table of generie characters. 
4.5 
Cabinifex (1863)1 
Shell dextral, 
spiral, Inflated, an- 
gular, horn I'olor- 
ed, spire terraced, 
whorls numerous, 
angular, visible 
above, last whorl 
very large, broad 
above, very rapid- 
ly attenuated be- 
low: uinbblicus fun- 
nel-shaped; aper- 
ture triangular, 
broad above, nar- 
row below; inner 
lip slightly thick- 
ened;outer lip thin, 
acute, angular 
above, flexuose. 
Figure 5. 
Species two. 2 
Recent. 
POMPHOLYX 
(1856) 
Shell dextral, de- 
pressed, globose, 
translucent, horn- 
colored; spire 
short, obtuse, last 
whorl very wide, 
ventricose; aper- 
ture very large; 
wide, subcircular, 
expanded; inner lip 
thicKened, outer 
lip acute. 
Figure 4. 
Species two. 3 
Itecent. 
VORTiriFEX 
(1870)* 
Shell dextral, de- 
pressed sub- 
globose, uniblicat- 
ed; volutums rap- 
idly increasing in 
size, last one equal- 
ing nine-tenths 
bulk of shell, pro- 
duced below so as 
to form a promi- 
nent ridge around 
the widely exca- 
vated umbilical re- 
gion; aperture 
large, subovate, 
widest above, sub- 
angular below; lip 
oblique; lines of 
growth oblique, 
sometimes forming 
little regular 
costte. 
Figure 6. 
Species two. 
Fossil. 
P0MPHOLOPSI8 
(1887) 
Shell dextral, 
globose, rather 
thick, deeply um- 
bilicated; body 
whorl very large; 
spire very short, 
2-2!^ whorls; aper- 
ture roundly 
ovate, peritreme 
continuous, outer 
lip acute. 
Figures 1—3. 
Species one. 
Fossil. 
* Proposed by Mr. W. G. Binney, Dec. 9, 1863, but not described* 
Megasystro-plia., proposed by Mr. Lea (Proc. Phila. Acad. Jan., 1864, but 
not described.) Carinifc.x, described by Binney, Am. Jour. Couch., vol. 
i, p. 50, 1865. 
^One of these two i/cscridcd species, namely C. ponsonbyi E. A. Smith, 
may prove to be a local variety of C. ncivherryi Lea, the type of the 
genus. In connection with this name a curious interchange of figures 
and descriptions occurs — noticed by Mr. Smith but imcorreeted in print 
«o far as I know. C. /^^.tflw/iy/ was described in Proc. Zool. Soc. Lon- 
don, 2 Nov., 1875, pp. 536 538. The figiiyc illustrating it is Dialalcithii E. 
A. Smith. This last named form is described at the same time, also from 
California, on pp. 539-540, but \.\\e figure there given- is the C. ponsonhyi 
E. A. Smith. C. bre-veri Newcomb, has never been described. 
' One of these described species, P. solida Dall, is possibly not 
sufficiently distinct from the typical form to take rank as a species- 
nor indeed as a well-marked variety. 
*The type of this genus — Vortkifex hinncyi — was described by Mr. 
Meek under the name of Caritiifrx hintuyi, Vide Proc. ri.iiu. Acad. Sci... 
