A treatise on malacology; or, Shells and shell fish . em. 188. f. 1919-20. SuB-FAM. AMPULLARIN^. Animal with a respiratory siphon; shell globular orturbinate. Valvata Drap* Shell turbinate, sometimes nearly dis-coid; spire very short; the whorls convex; aperturecircular; operculum spiral; umbilicus , piscinalis. Sow. Man. f. 322. Ampullaria Lam. Shell glo-bose, rarely discoid, turbinate;spire very short; aperture ob-long, pointed above, roundedbelow. Ampullaria Lam. Outer lip thin;operculum horny. fasciata Lam. {fig. 101. a.) Outer lip thick-ened; operculum shelly,globos
A treatise on malacology; or, Shells and shell fish . em. 188. f. 1919-20. SuB-FAM. AMPULLARIN^. Animal with a respiratory siphon; shell globular orturbinate. Valvata Drap* Shell turbinate, sometimes nearly dis-coid; spire very short; the whorls convex; aperturecircular; operculum spiral; umbilicus , piscinalis. Sow. Man. f. 322. Ampullaria Lam. Shell glo-bose, rarely discoid, turbinate;spire very short; aperture ob-long, pointed above, roundedbelow. Ampullaria Lam. Outer lip thin;operculum horny. fasciata Lam. {fig. 101. a.) Outer lip thick-ened; operculum shelly,globosa^w. Zool. 111. i. pi. 119. Lanites Montf. Shell reversed ; the body-whorl ventricose only in the middle ; outerlip generally thin. L. Guinaica. Sow. Man. f. 319. Ceratodes Guild. Shell discoid; body-whorl higherthan the spiral whorls; outer lip thin; operculumhorny. C. Cornu-Arietis. Sow. Man, f. 320. Paludina. Spiral; spire equal, or longer than theaperture ; lips thin. * Affinities uncertain. t Pachystotna Guild., already used in Ichthyology. z 2. 340 SHELLS AND SHELL-FISH. PART 11. Paludina Lam. Whorls inflated; umbilicus open ;operculum horny ; aperture ovately round,elongata. Zool. 111. i. p\. 98.(Jiff. 101. b.) unicolor. lb. (c.) Nematura Benson.* Whorls slightly convex; aperturesmall, oblique, contracted ; operculum spiral, Man. f. 305. Meladomus Sw. Spire pointed; aperture oval, re-versed, pointed, and contracted above; umbilicus none; operculum } M. bulimoides. f Sw. Sp. Nov. SuB-FAM. MELANIAN^. Shell spiral ; the spire always as long as, and generallymuch longer than, the aperture ; body-whorl small.;}: Paludomus Sw. Shell oblong-globose, strong; spireshorter than the aperture; inner lip very thick. Paludomus. Shell smooth; outer lip slightly spreading,the margin crenated ; inner lip very thick and ena-meled. India. P. globulosa. GrifF. Cuv, xii. conica. GrifF. Cuv. f. 14. f. 6. retiisa. lb. f. 9. Anculosa Say. Spire very short; outer lip sinuated,th
Size: 1266px × 1973px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1840, booksubjectmollusks, bookyear184
