WORMS. TESTACEA. 81. Helix. 541 



Inhabits the Mediterranean Atlantic Indian and North feas, and 

 may with propriety be referred to the Genus Haliotis. 



Shell fiat elliptic thin pellucid, white, or reddifh with a white 

 band, or orange with 2 paler bands, flightly cancellate out- 

 wardly : <vjhorl$ 4 lateral : lip very acute : J'nail fmall white 

 with 2 fhort tentacula : ltd o. 



Muralis. ghell imperforate fubdeprefred, white: with 6 whorls. 



Sckrtzt. Erdconch, tab* 2.Jg 27 ? Geoffr. teji. 4. 

 Inhabits France; 6 lines wide. Shell pellucid, convex each fide, 

 with a 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 5 whoils : [nail pellucid, above blueifh, beneath 

 white, with 2 linear tentacula tipt with eyes. 



parychium. Shell hyaline fubconic glabrous : aperture ovate, with 

 about 3 teeth within. 

 Inhabits Denmark, among rotten leaves : not a line long. 

 Shell with 5 round whorls: fnail yellow, with 2 truncate tenta- 

 cula furnifhed with eyes at the bafe. 



Jlmbigna, Shell fubimperforate convex, with remote compreffed 

 grooves : aperture femiorbicular. 



Inhabits the Mediterranean, Adam feneg. i.tab. 13. Jig. 1? 



Shell fmall white, refembling a Nerita, but the inner lip is not 

 refle&ed ; with the umbilicus open in the younger and fhut in 

 the adult Ihells : fpire lateral obtufe, furrounded with 6 ele- 

 vated grooves, 



Corpus, Shell imperforate ovate black : aperture ovate. 

 Martini Berl. Magax. 4. tab. ^sjig* 36. 

 Schr&t. jlufconch. t. J.J. 3,4. 

 Inhabits ftagnant waters of Greece : refembles H. ftagnalis, but 



is about half the fize, lefs pointed, the firft whorl not fo ven- 



tricofe, and the lip lefs prominent. 



Pjrum. Shell fubcylindrical, with decuffate ftria?, hyaline with 

 chefnut marks and tipt with brown : whorls contrary, 

 3 of them very large and deprefled in the middle. 



Martini n ( Mannigf. 4. tab. 2. Jig. 15, 16. 

 Inhabits Guinea. Spjre with 7 whorls. 



Mdmoratai 



