garetus morelli, Ckiaje, t. 103. f. -1. 8. pcrspicuus, Philippi, 



Canfraine, t. 105. f. 2, t. 105. f. 3. 

 L. Adansonii. Sigaretus A., Cliiaje, t. 103. f. 9. 

 L. neritoidea. Sigaretus ii., Chiaje, t. 103. f. 2. 

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



, all one species. 



^-tv<- i'oer'i ^ ^t*C44^i>. L. nigra. Sigaret, Cuvier, Annt. t. 104. f. 2, t. IGfi. f. 3 ; Cuvier, 

 J^ /.,./ R. A. 1. 1(57. f. . Coriocella nigra, Blainv. t. 104. f. 3. Si- 



* gai-etus Tonganus, Quoy, t. 104. f. 4. 



2. M.\RSENiXA. 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. Podopkthalma. 



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

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

 pulmonary bag on each side. 



, t h 'Z y n Fam. 10. Ampullariadce, n. 148. 



Operculum annular. Teeth, 1 central, lateral 3'3, inner large like 

 central. — Quoy, V. A. t. 57. f j9. Mantle with a more or less long 

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



1. Amfullaria, n. 16(5. 0|)er('ulum horny, with a slicUy in- 

 ternal coat. Kespirattiry siphon rlnniytiT I'l*^ ^yy^'-^^^^*^ 



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



2. A. Cebensis, Quoy, t. 47. f. 1, 2 & 4. 



2. Marisa, n. 1(57. Operculum horny, siphon elongate. M. cor- 

 ) (tA'^^'^ Jc*^^/ t~. nu-arietis. ^ Ampul, c, Lanik. 



3. PoMUS, n. 1(58. Operculum horny, doHtm l ; siphon elongate. 



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



2. P. Rossii. Ampullaria R., lyOrb. t. 47*. f. 1. 



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



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



5. P. insularum. Ampullaria i., D'Orb. t. 117. f. I. 



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





4;_JBaMJ£4TirAr«»J 71 . Oper. homy, dw jtti 'wl ; inner lip concave, 

 shell striated.)^^ P. neritoides. 



5. Lanistes, n. 169. Oper. horny, auiii]twl» or with nucleus 

 on left margin.- L. Bolteniana. 



(>. MicLADOMUS, n. 170. Oper. horny, ^nii tw>l. M. ohvaceus. 



7. AsoLENR, n. 172. Oi)erculuiii horny, with an internal shelly 

 coat ; siphon not ex])osed. 



A. Plata;. Ampullaroi.les P., irOrb. t. 47*. f. 4. 



