164 



MAKUAL OF THE MOLLUSCA. 



Type, 



SucciNEA, Draparnaud. 

 S. putris, PI. XII. fig. 23. 



Amber- snail. 



Syn. Coclilohydra, Fer. Helisiga (S. Helense) Less, Amphibuliraa (patula) 

 Beck ; Pelta (Cumingii) Beck. 



Shell imperforate, tliin, ovate or oblong; spire small; apertm-e large, 

 obliquely oval ; columella and peristome simple, acute. 



Animal large, tentacles sbort and thick, foot broad ; lingiial teeth like 

 helix; S. putris bas 50 rows, of 65 teeth each {Thomson). Inhabits damp 

 places, but rarely enters the water. 



Bisir. 68 sp. Europe 5, Africa 3, India 1, Australia 1 ; Pacific Ids. 17, 

 N. America 14, S.America 11, W.Indies 11. lossil. Eocene, Brit. 



Sui-gemis. Omalonyx, D'Orb. 0. unguis. PL XII. fig. 24. Shell oval, 

 convex, translucent, spire nearly obsolete, margins sharp. Animal large, 

 slug-like ; shell placed on the middle of the back, with the mantle slightly 

 reflected upon it all round. List. 2 sp. Boli\aa ; Juan Fernandez. 

 BuLiMUS, Scopoli. 



Mym. ? Boiilimos, extreme hunger (in allusion to its voracity !) 



,Syn. Bulinus, Brod. (not Adans). Type. B. oblongus. PI. XII. fig. lOl 



Shell oblong or tm-reted ; aperture with the longitudinal margins unequal, 

 toothless or dentate ; columella entire, revolute externally or nearly simple ; 

 peristome simple or expanded. 



Jnimal like Helix. B. ovatns attains a length of 6 inches, and is sold 

 in the market of Rio ; it oviposits amongst dead leaves, the eggs have a 

 brittle sheU, and the young when hatched are an inch long. (See p. 54, 

 fig. 31.) 



Sections. Odontostomus (gargautuus) Beck, 

 aperture toothed, 13 sp. Brazil. 



F achy Otis, Beck (Caprella, Guild.) fig. 91.* 



Vartula, Per. P. faba. PL XII. fig. 13, 

 Tahiti. 26 sp. Asiatic, Australian and Pacific 

 Ids. 24 ; S. America 2. The ftuimal is ovo- 

 viviparous. 



Gibhus {Lyomietianus) IMontf. Shell himip- 

 backed ; ]\Iauritius, 2 sp. 



Bulimulus, Leach. B. decoUatus. PL XII. 

 figs. 11, 12. Shell small, lip acute. Above 

 300 sp. England 3 sp. 



Zna, Leach. Z. lubrica. PL XII. fig. 14. 

 Shell polished, columella slightly truncated. 



Jzeca, Leach. A. tridens. PL XII. fig. 15. 

 Shell polished, peristome thickened and toothed. 



Fig. 91* B. auris-vulpina. 



Fig. 91. Bulimus auriS'Vvlpina, Chemn. The great extinct land-snail of St. 



