WORMS. TESTACEA. 84 . Patella. 577 
Shell entire, oval, convex, ftriate, with a fubmarginal re- 
flefted mucronate crown. 
Rump/. Muf, tab. 40. I. Mart, conch. 1. /. 17./. «S 4 » 'S 5 - 
Inhabits ; fize of a melon feed. _ 
Shell fulvous ; crown furrennded with a reddifti' ring. 
'tita. Crown revolute: back crefted, carinate. mime 
Inhabits SW/compreffed, fragile, diaphanous, with nume- 
rous tranfverfe grooves, and a very thin double membrane on 
the back irregularly cut; border finuate : aperture with an 
acute dorfal angle. 
•“(mtrh. Shell very entire, oval, membranaceous, with a nearly 
central fnucronate refledled (hell. 
Aroerrv. conch, tab. 27- fg- !• Zeom.t.i.f. I. 
Ginan. op. pojl. 2. tab. 2. fen. Geofr. test. t. 
Martini Berl. Magaz. 4. tab. 7. fg. 2, 3. 
Inhabits frelh waters of i;— 2^ lines long. 
Shell veiy thin and brittle, pellucid, white, above convex, be- 
neath wncave : crown with a very minute point : 
with 2 truncate concealed tentacula, furnilhed with ey 
the interior angle. 
P‘“viati. Shell very entire, oval, a little horny, with a- marginal 
h. mucronate crown: aperture oval. 
Lister, tab. Znim.Ang. t. 2./. 32. 
Gsiult. test. tab. 4. A A- B B. Arg. conch, l. t. 27./. i> , 
Martini Berl. Magaz. ^. tab. p. fig. •» 
Schrcet.Jlujconch.tab. 1. Jig. ki». . 1 ... T>>ft 
Inhabits rivers of Europe ; 2 i lines long : refembla the laft. 
brittle, pellucid, with only a few concentric ftri* . point of 
the rather obtufe. 
Shell entire with elevated dots and ftriate : crown acute/ 
flraight. 
Mull. Zool. Dan. I. tab. la. ftg. t" 3 - 
Inhabits bays of Norway, on ftones. 
i;^f//white,^with 60-80 ftri»: inhabitant white, ov^ate, without 
the leaft appearance of eyes, 
‘“'ginea. Shell Very entire, white with red bands. 
Mull. Zool. Dan. 1, tab, 12. fiig. fi, 5 - 
Inhabits bavs of on Fuel. _ 
SS minute, with about rS bands and very miniue concentric 
trial, within yellowiai ; inhabitant white, with a very broad 
chefmit flap or membrane and black eyes. 
VOL. IV. — 4r> 
Tejjelata, 
