WORMS. TESTACEA. 81. Helix. 4X 
Inhabits the Mediterranean Atlantic Indian and North feas, and 
may with propriety be referred to the Genus Haliotis. 
Shell flat elliptic thin pellucid, white, or reddifh with a white 
band, or orange with 2 paler bands, flightly cancellate out- 
wall. whorls 4 lateral: dip very acute: frail {mall white 
with 2 fhort tentacula: Udo, 
Muralis- Shell imperforate fubdepreffed, white: with 6 whorls. 
Schret. Erdconch, tab, 2. fig 27? Geoffr. tefl. 4 
Inhabits France; 6 lines ^S Shell eMe convex each fide, 
— witha thickifh white lip. 
Vertigo, Shell cylindrical glabrous obfcure fulvous: whorls round 
. contrary: aperture nearly fquare and 6-toothed. 
Inhabits Denmark, in decayed wood: a line long. 
Shell with 4 or § whorls: frail peilucid, above blueifh, beneath 
white, with 2 linear tentacula tipt with eyes, 
Carychium, Shell hyaline fubconic glabrous; aperture ovate, with 
about 3 teeth within. 
Inhabits Denmark, among rotten leaves: not a line long. 
Sheil with 5 round whorls: /uazl yellow, with 2 truncate tenta, 
cula furnifhed with eyes at the bafe. 
Ambigua. Shell fubimperforate convex, with remote compreffed 
grooves: aperture femiorbicular. 
Inhabits the Mediterranean. Adans feneg. 1. tab. 13. fig. 1? 
Shell {mall white, refembling a Nerita, but the inner lip is not 
reflected; with the umbilicus open in the younger and fhut in 
the adipi fhells > /pire lateral obtufe, furrounded with 6 ele. 
vated grooves, 
Corus; Shell imperforate ovate black : aperture ovate. 
Martini Berl. Magaz. 4. tab. 9. fg. 36. 
Schrat. flufconcb. t. 7. f+ 3, 4e 
Inhabits ftagnant waters of , MAE refembles H. ftagnalis, but 
is about half the fize, efs pointed, the firft whorl not fo ven- 
tricofe, and the lip leís prominent, 
Shell fubcylindrical, with decuffaté ftriz, hyaline with 
chefnut marks and tipt with brown: whorls contrary, 
3 of them very large and depreffed in the middle. 
Martini n. Manrigf. 4. tab. 2. fig. 15, 16. 
inhabits Guinea. Spire with 7 whorls. 
Pyrum, 
Mamorata: 
