474 MOLLUSCA SUB-KINGDOM VI 
Cassidaria, Lam. (Morio, Montt.; Galeodea, Link.), (Fig. 955). Shell ventricose, 
not varicose. Canal long, twisted, reverted, or bent sidewise. Inner lip greatly 
expanded, outer lip 
reflected, often 
crenulate. Colu- 
mellar border 
plicate. Upper 
Cretaceous to 
Recent ; maximum 
in Eocene. 
Sub-genus: 
Sconsia, Gray (Fig. 
956). Last whorl 
with varix ; canal 

Fic. 956, 

eee on ayy short and straight. 
PIG. 955. 5 ee : : : T P = 
sa Cassidaria (Sconsia) Fic. 957 U pper Cretaceous to 
Cassidaria carinata, ambigua, Solander sp. eae Recent 
Lam. Calcaire Gros- Oligocene ;_ _—_ Lattorf, Cassis saburon, Lam. Mio- 
sier ; Grignon. near Bernburg. cene; Gainfahrn, near Vienna, 
Cassis, Lam. 
(Fig. 957). Shell ovoid, ventricose, having irregular varices. Spire short, aperture 
elongate. Outer lip thickened, reflected, usually denticulate in the interior. Inner 
lip callous, expanded, denticulate, wrinkled, or granulate. 
Canal very short, broad, sharply recurved, directed upward 
posteriorly. Tertiary and Recent. 
Family 24. Doliidae. Adams. 
Shell thin, inflated. Spire very short, body whorl very large, 
longitudinally ribbed or cancellated. Aperture wide, oval ; 
canal straight or curved. Operculum absent. Cretaceous to 
Recent. 
Dolium, Lam. Spirally ribbed. Outer lip notched in- 
ternally ; canal short, obliquely directed. Cretaceous to 
Recent. 
Pyrula, Lam. (Ficula, Swainson), (Fig. 958).  Spirally 
ribbed, grooved, or cancellated. Aperture very wide; outer Pyrula reticulata, Lam. sp. 
lip sharp; canal Miocene; Grund, near 
long, broad, ee 
straight. Lower Cretaceous to Recent ; 
maximum in Tertiary. 

Fic. 958. 
Family 25. Tritonidae. Adams. 
Shell thick, ovate to fusiform, with 
epidermis. Spire moderately high, whorls 
varicose. Aperture with thickened outer 
lip, and open, straight, or slightly bent 
canal. Operculum horny, with marginal 
nucleus. Cretaceous to Recent. 

Fic. 959. 

Tritonium, Link. (Triton, Lotoriwm, 
Tritonium (Simpulum) 
ae ‘ eae MEMES 
flandricum, de Kon. Fic. 960. Montf.), (Fig. 959). Spire elongated. 
Oligocene ; - Weinheim, Ranella marginata, Brocchi, The varices do not run continuously 
near Alzey. Miocene ; Grund, near Vienna. “ 
over more than a few whorls. Columella 
and inner lip callous or granulated. Outer lip thickened internally and notched. 
Cretaceous to Recent ; abundant in the Tertiary. 
