478 MOLLUSCA SUB-KINGDOM VI 
Rapana, Schum. (Fig. 976). Like the preceding, but perforate. Inner lip callous, 
expanded. Cretaceous to Recent. 
Lysis, Gabb; Stenomphalus, Sandberger. 
Cretaceous and Tertiary. 
Sistrum, Montf. (Ricinula, Lam.) ; Mono- 
ceros, Lam.; Concholepas, Lam.; Cymia, 
Morch, ete. Tertiary and Recent. 
Family 5. Fusidae. Tryon. 
Shell turreted, fusiform or ovoid, generally 
without varices. Canal more or less elongated. 
Inner lip. smooth, or with weak columellar 
folds; outer margin thin. Operculum horny. 
Jura to Recent. 

Fic. 975. 
These shells are sparse in the Upper Jura purpura ezilis, Fic. 976. 
and Cretaceous, but abundant in the Tertiary Partsch. Mio- —  Rapana lawecarinata, Micht. 
“ cene; Mollers- Oligocene; Santa Giustina, 
and Recent. The animal differs but little dorf,nearVienna. Italy. 
from that of the Buccinidae and Muricidae. 
Fusus, Lam. (Colus, Humph.), (Fig. 977). . Shell narrow, elongate ; spire acuminate. 
Aperture ovate; canal very long, straight, open. 
Outer margin thin, sometimes crenulate, and 
often striate within; columella smooth. Rare 
in Upper Jura and Cretaceous, very profuse in 
Tertiary and Recent. 
Clavella, Swains. (Cyrtulus, Hinds), (Fig. 
978).  Thick-shelled, smooth, or with fine spiral 
striae. Body whorl 
suddenly contracted 
anteriorly. Canal 
very long, straight. 
Common in Eocene ; 
rare Neocene and 
Recent. 
Sycum, Bayle 
(Letostoma, Swains.), 
(Fig. 979). Spire 
short; body whorl 
inflated, smooth, 
somewhat flattened 
below the suture. 
Inner lp smooth ; 

canal — straight. 
ited, « Common in the 
Fic. 977. = ? 
; eae FG. 978. Fic. 979. Eocene; rare im 
Fusus longirostris, 
Brocchi. Miocene ; Clavella longaevus, Lam. Sycum bulbiformis, Lam. Cal- Miocene. 
Baden, near Eocene; Damery, near  caire Grossier; Grignon, near Le Ry YY 
Vienna, Epernay. ; Paris. Fasctolaria, 
Lam. (Fig. 980). 
Like Fusus, but distinguished in general by having a shorter spire, more inflated 
body whorl, a wider and more sinuous or flexuous canal, and in that the anterior 
portion of the columella has two or three oblique plications. Cretaceous to 
Recent. 
Latirus, Montf. (Fig. 981). Shell fusiform, turreted; spire costate. Aperture 
