5 42 WORMS. TESTACEA. 81. Helix. 



Mamorata, Shell marbled with white cinereous and blue, obtufe; 

 whorls round: the firfl twice as long as the reft, in- 

 flated in the middle and longitudinally -ftriate : aper- 

 ture ovate, 



Schrcet.fiufconch. tab, 6. fig. 9. 



Inhabits rivers of Strafiurg, f of an inch long: whorls 5, 



Acbatina. Shell chefnut pellucid thin, with an ovate aperture, _ 

 Inhabits— —Schraetfiufconcb tab. 6. fig* 15. a, b. 

 Refembles the laft, but is. lei) and has only 4 narrower whorls. 



Lugubris, Jhell ovate pointed pellucid, tranfverfely ftriate, covereji 

 with a black fkin, under which it is ochraceous with 

 chefnut undulations: firft whori twice as large as the 

 reft: aperture oblong ovate. 



Inhabits-*:— Schract fiufconch, tab. 6>fig> IJU 



Shell about 9 lines long, with 7 whorls* 



Minima* Shell ovate conic fubimpexforate : aperture 'orbicular: % 

 laft whorls placed in the centre of the firft. 



Inhabits Schrcetfiufconcb. tab. 7. fig. 18, 



Shell obtufe, hardly if line long*. 



hfiata.. Shell white folid opake, the firft whorl twjee as large as all 

 the reft: aperture large margined. 

 Inhabits the river Unfirut, Schraet.fiuf conch, tab. J./tg. 5. 



Albicans, Shell white opake pointed: aperture oval. 



Inhabits waters of Hamburg, Schrcet.fiufconch, t, 7. /". 6. 



Repanda. Shell ovate pointed fubimperforate : firft whorl ventricofe 

 and larger than all the others : aperture femicircular.- 



Inhabits in ftagnant waters. Schrcet.fiufconch. tab, "]*fig> i& 



Shell 6 or 7 lines long. 



Opaca, Shell ovate pointed folid whitim opake: aperture ovate- 

 oblong: firft whorl larger than the reft. 

 Schrcet.fiufconch. tab. 7 -fig* 17. 

 Inhabits -aquatic* Shell with 5 whorls. 



furgida. Shell obtufe, with 4 diftant whorls inflated in the middle : 

 aperture orbicular margined. 

 Schrat. fiufconcb. tab, %*fig* 7« a? b. 

 Inhabits Shell 2 lines long. 



Carulef- 



