508 WORMS. TESTACEA. 81. Helix. 
* Vortex. Shell flat thin, above concave: aperture oval flat. 
Donovan's Brit. fhells. ii. tab. 75. 
Da costa Brit. conch. p. 65. tabs 4. fig. 12s 
Pennant Brit. Zool. iv. tab. 183. fig. 124. 
Lister tab. 138. fig. 43. Anim atgl. t. 2. f. 28. 
Petro. Gaz. tab. 92. fig. 6. Gualt. test. tab. 4. GG. 
Klein oftr. tab. 1. fig. 9. Mart. Berl. Mag. t. 8. J£ 19. 
Schrat. Jflsfcanch, tab, 5. fig: 16, 17. 
Chemn. conch. 9. 240. 127. Pigs; 1127. dy bs 
Inhabits ponds and rivers of Europe: 1i—4 lines wide. * 
Shell with very minute tranfveríe itrie, yellow when it is empty ; 
whorls 5—7, a little convex on one fide: aperture with a thin 
acute margin, ‘The inhabitant is rufous with white tentacula, 
and extremely tenacious of life. 
Scabra. — Shell fubcarinate imperforate ovate aotired ftriate. 
Inhabits Shell with brown divided bands, the lower whorl 
with an elevated line, 
Gothica. — Shell convex each fide, horny with fubferruginous bands, 
Inhabits woods of Sweden. 
Gualteri- 
ii Shell imperforate depreffed, with decuffate {triz: aperture 
acute each fide. 
Gualt test. tab, 68. E... Born muf. Cef. Find. tea. e 136 f. 12, 13: 
Chemn. conch. 5. p. 237. vign. 44. fig. A— 
Chemn. conch. 9- tab. 126. fig. 1100, 1101. 
Sebrat, Einl. in couch. 2. tab. 4. figs 2, 3« 
Inhabits India; very rare. A land fpecies. 
Shell dirty grey, beneath convex: aperture triangular caniculate, 
with a white border, 
Tricarinata Shell top-fhaped fubumbilicate acuminate, with convex 
fpiral (trie and tripte ridge: aperture dilated. 
Inhabits Chemn. conch. 9 tab. 126, fig. 1103, 1104. 
Shell 11 lines wide, pale with. traníverfe yellow freaks and 
obíolete fpiral ftri : «vborts 5: aperture nearly circular: Zip 
white with an acute margin. 
Tfogno- .. Shell browniíh depreffed, the firft whorl round: aperture 
mostomos. contracted, nearly triangular, 3-toothed and margined. 
Lister tab. 93. ‘Klein: ofr. tab, Và Poe iaze 
Inhabits Virginia and Al/ace. Shell nearly imperforate. 
Oculus Shell depreffed umbilicate: whorls contiguous, the fft very 
i Ait fn large: aperture oblong-ovate, with a ‘pale fulvous 
border within. 
Seba 
