DESCRIPTION OF THE FOSSILS. 
225 
N. plicistria. Ph. PI. XIV. fig. 25. Bolland ; Kirby Lonsdale ; 
Bristol ; Northumberland ; Kildare. 
Oval, depressed, columella not callous ; spire of three volutions plicistriate above. 
«. volutions flattened above, with age concave, g. volutions not flattened above. 
N. elongata. Ph. PI. XIV. fig. 28. Bolland. 
Elongate oval, apex mammillary ; striae oblique, minute. 
N. tabulata. Ph. PI. XIV. fig. 29. Bolland. 
Ovate, finely striated ; volutions tabular in the upper part. 
Euomphalus. Gen. Char. Discoid ; dextrally spiral ; upper disk 
plane, lower concave ; cavity chambered ; septa imperforate. 
E. pentangulatus. Sow. t. 45, fig. 1, 2. Ph. PI. XIII. fig. 13. Hol- 
land ; Dublin ; Kildare. 
Whorls carinated above, obtusely angulated, or rounded below ; lines of growth 
fine. Fig. 13 is a section to shew the chambered structure. From the mouth a certain 
distance inwards the last chamber is seen filled with stony matter ; beyond this, a second 
space is occupied with brown sparry substance ; and from this to the inner chambers is 
clearer spar ; the chambers are full ot spar with here and there a cavity, as in ammo- 
nites. 
E. catillus. Martin, Ph. XIII. fig. 1, 2. Buxton ; Tideswel! ; Win- 
ster ; Bolland. 
Each side of the whorls carinated. 1, the lower ; 2, the upper side. 
E. calyx. Ph. PI. XIII. fig. 3. Bolland. 
Beneath wider than above, excavated ; the margin carinated. The figure shews 
the lower side. 
E. bifrons. Ph. PI. XIII. fig. 4. Bolland. 
Whorls carinato-tuberculated above, obtusely angulated or rounded below. (This 
is not Euomph. nodosus Sow. which is tubercled on the under side.) 
E. pugilis. Ph. Bolland. 
Whorls tuberculated on both sides. This distinguishes it from E. bifrons. 
E. cristatus. Ph. PI- XIII. fig. 5. Bolland. 
Whorls round, widely disjoined ; a large double dentated dorsal crest, continued 
to the inner whorls. 
Cirrus acutus. Sow. PI. XIII. fig. 12. Bolland ; Derbyshire. 
Acutely conical, apex mammillary, volutions round, plane above, striated across. 
C. tabulatus. Ph. PI. XIII. fig. 7- Bolland; Northumberland; 
Kendal. 
Depresso-conical, volutions subquadrate, above tabulate or concave, aperture oval, 
transverse. 
