28 systematic arrangement 



3. Ermea. 

 Body convex, smooth ; mantle expanded, rather sinuous, simply 

 notched in front. Foot small, covered by the mantle. Teeth 2-1-2, 

 like Lamellaria, "but with a small, slender, linear, arched, inner 

 lateral tooth." — Alder. 



1. E. perspicua, t. 104. f. 2, t. 166. f. 3 ; Forbes §■ Hanley, B.M. 



t. P.P. f. 1 ; Berg, Marseln. t. 1. f. 1-14. Lamellaria p., Phi- 

 lippi, Moll. Sicil. t. 10. f. 5? ; Adams, Gen. Moll. t. 21. f. 3. 



2. E. Adansoni, t. 103. f. 9. 



3. E. convexa, t. 103. f. 5. 



B. Odontoglossa, Gray. Teeth in three series, 1 • 1 • 1 ; central 

 and lateral fixed (fig. 14, 15). Operculum annular. Mantle 

 siphoned. Shell channeled in front, with folds on the pillar 

 (seep. 10). 



Fam. IX. FASCIOLARIAD^E, Gray. 



Central tooth transverse ; lateral teeth very broad, linear, with 

 many equal denticles on the edge. Shell with plaits on the pillar. 



a. Fasciolariana. Operculum ovate ; nucleus apical ; canal of shell 

 elongate; central tooth narrow (fig. 14). 



1. Fasciolaria. 



Shell ovate, fusiform, swollen ; spire conical ; whorls smooth or 

 waved ; mouth ovate, open ; outer lip crenated, lined within ; inner 

 lip smooth ; pillar with three or four very oblique plaits in front. 

 Operculum ovate, acute, sometimes radiately grooved. 



Kg. 14. — Teeth of Fasciolaria Tarentina. 



1. F. tulipa, Kiener, t. 86. f. 2; Lamk. t. 87. 



2. F. filamentosa, Quay, t. 8. f. 5. 



3. F. Tarentina, Chiaje, t. 8. f. 4 ; Joannis, t. 89. f. 



Tentacles of animal of F. tulipa close together at the base. Eyes 

 near the middle of the tentacles. Teeth of F. filamentosa exactly 

 like those of Latirus rusticus, 1 • 1 • 1 ; central small, narrow, with 

 three small denticles ; lateral very broad, linear, not versatile. 



Teeth of Fasciolaria Tarentina 1 ■ 1 ■ 1 . Tongue linear, pale yel- 

 lowish, nearly transparent, forming three nearly continuous bands; 

 central narrow, about one-third the width of the lateral teeth, with 

 four or five ? small teeth on the nearly straight front edge ; lateral 

 wider, transverse, with six or eight ? small teeth on the nearly straight 

 front edge. 



