36 
on the front of the pillar ; central tooth narrow, small; lateral teeth 
very broad, linear, with many equal teeth (fig. 5). 
Criranantonnnaeqant Minn’ 
Fig. 5.—Fasciolaria. 
a. Fasciolariana. Operculum ovate ; nucleus apical ; canal elon- 
gate. Fasciolaria, Lagena. 
b. Mitrina. Operculum none; canal short. Mitra. M. episco- 
palis. Central tooth broad, toothed. M.adusta. Central tooth simple, 
hooked. 
Fam. 7. TuRBINELLID#. Head truncated; tentacles moderate ; 
mantle enclosed ; siphon and canal of shell straight ; shell with plaits 
on the middle of the pillar ; central teeth broad, few-toothed ; lateral 
teeth narrowed, strong, with a single large tooth (fig. 6). Turbinel- 
lus, Cynodonta. 
Fig. 6.—Turbinellus. 
C. Rachiglossa. Teeth on lingual membrane in a single central 
series, often toothed (figs. 7, 8). 
Fam. 8. Votutip. Shell with plaits on columella; siphon re- 
curved, and canal very short. 
Fig. 7.—Yetus olla. Fig. 8.—Cymbiola Turneri. 
a. Volutina. Siphon with auricles on side of base; tentacles far 
apart, united by a broad veil over the head. 
* Teeth lunate, apex 3-toothed (fig.7). a. Operculum none. Fetus, 
Cymbium, Scapha (vespertilio). 3. Operculum distinct. Voluta. 
** Teeth linear, base angularly diverging, with a single conical 
apex (fig. 8). Operculum none. Cymbiola (Turneri). 
b. Volutomitrina. Siphon simple at the base; tentacles close 
together at the base; mantle enclosed; operculum none; teeth with 
