7 b 



garetus morelli, Chiaje, t. 103. f. 4. S. perspicuus, Philippi, 

 Cantraine, t. 105. f. 2, t. 105. f. 3. 



2. L. Adansonii. Sigaretus A., Chiaje, t. 103. f. 9. 



3. L. neritoidea. Sigaretus n., Chiaje, t. 103. f. 2. 



4. L. n. Sigaret convex, Blainv. t. 103. f. 5. These may be 



all one species. 



5. L. nigra. Siajaret, Cuvier, Anat. t. 104. f. 2, t. 166. f. 3 ; Cuvier, 



R.A. 1. 167. f. . Coriocella nigra, Blainv. t. 104. f. 3. Si- 

 garetus Tonganus, Quoy, 1. 104. f. 4. 



2. Marsenina. Teeth, central 1, lateral 3'3, hooked, equal. 

 M. prodita. Lamellaria prodita, Loven. 



Suborder II. Phytophaga. 

 Mantle not (or rarely) produced into a siphon. 



Sect. 1. Podophthalma. 



Eyes on peduncles, separate from the tentacula. Male organ on 

 edge of mantle. Gill-cavity with a short fringed gill and a large 

 pulmonary bag on each side. 



Fam. 10. Ampullar ia dee, n. 148. 



Operculum annular. . Teeth, 1 central, lateral 33, inner large like 

 central. — Quoy, V. A. t. 57. f. 9. Mantle with a more or less long 

 siphon on left side ; rectum not traversing the heart. Fluviatile. 



1. Am pull aria, n. 166. Operculum horny, with a shelly in- 



ternal coat. Respiratory siphon elongate. 



1. A. fasciata, Hardwicke, t. 47. f- 3. 



2. A. Cebensis, Quoy, t. 4J. f. 1, 2 & 4. 



2. Marisa, n. 167- Operculum horny, siphon elongate. M. cor- 



nu-arietis. Ampul, c, Lamk. 



3. Pomus, n. 168. Operculum horny, dextral ; siphon elongate. 



1. P. zonatus. Ampullaria z., D'Orb. t. 47*. f. 2. 



2. P. Rossii. Ampullaria R., D'Orb. t. 47*. f. 1. 



3. P. Scalaria. Ampullaria S., D'Orb. t. 47**. f. 2. 



4. P. canaliculars. Ampullaria c, D'Orb. t. 47**. f. 1. 



5. P. insularum. Ampullaria i., D'Orb. 1. 117. f. 1. 



6. P. , Guilding ; Swains, t. 117. f- 2. 



4. Pomella, n. 171. Oper. horny, dextral; inner lip concave, 



shell striated. P. neritoides. 



5. Lanistes, n. 169. Oper. horny, sinistral, or with nucleus 



on left margin. L. Bolteniana. 



(i. Meladomus, n. 170. Oper. horny, sinistral. M. olivaceus. 



7. Asolene, n. 172. Operculum horny, with an internal shelly 

 coat ; siphon not exposed. 



1. A. Plata;. Ampullaroides P., D'Orb. t. 47*. f. 4. 



