506 WORMS. TESTACEA. 8r. Helix. 
Petiv, gaz. tab. 10. fig. 131. £. 100, f. 216; 
Chemn. conch. 9. tab, 126. fig. 3102. 2. 1, 2. 
Inhabits Ponds and rivers of Europe and Barbary: fmall, 
Shell pellucid horny, rarely opake, very finely ftriate: awhorls 4 
or 5, the firft much larger than the rett. : 
Complanata Shell carinate downwards, umbilicate convex, beneath flat : 
aperture femi heart-ihaped. j 
Chema. conch. g. tab. 127. fig. Y121—1123. 
Schret. flufconch 1. 5. f. 22—25. 
Schrat. Einl. in conch. 2. t. 4. f. Vo 
2. Martini conch. 4, tab. 8. fig. 22^ 
Schrat. flufconcb. tab. 5. fig. 27? 
Inhabits ponds and rivers of Europe G Barbary; 1—6 lines in 
diameter: the inhabitant black, with rufous tentacula. 
SPe// brown or pale, tubpeliucid, very finely ftriate traníverfely : 
whorls 5 or 6. 
ingens. Shell fubcarinate imperforate convex, with an inverted ring- 
ent aperture: lip 4-plaited behind. 
Shaw Natur Mifcell. tab. 574. the leffer figures. 
Lifter tab. 99. Azgemv. conch, tab. 28. fig. 13, 14. 
Bonan recr. 3. fig. 330; 331. Muf. Kirch. 3. fu 531, 332. 
Martini Berl. Magax. 2. t. 4. f. 42.8, b. 
Favann. conch. tab. 63. fig. F. 10. 
Chemn. conch. 9. t. 109. f- 919, 920. 
Born Muf. Caf. Vind tefl. t. 14« f. 11, 12, 
. Lifter tab. 83,84. 87. 
Inhabits India: 14 inch wide, SZz/ yellowifh-brown or cine- 
reous with ferruginous fpots, or white with brown fpots: 
aperture oblong-cval, with 4, 5, 6 or 8 plaitsor teeth: avZor/: 6, 
bo 
Simuata. Shell imperforate fubcarinate, reddifh-brown with a white 
ridge: aperture tranfverfe toothed and 3 plaited 
behind. | 
Lister tab. 97, 98: Chemn, 9, tab. 126. fig, Y110—1112. 
Klein offr. tab. wt. fig. 31. d. 1; Argenv. conch, tab. 63. F, 8? 
2. Lister. tab. 96. Argenv. conch, tab. 63. Fs 4. 
3. Lister tab.93. Klein ofr.t. 1, f. 22. 
Inhabits America: about 9 lines in diameter. 
Shell youghith, flattifh each fide, with 5 roundifh whorls: “ip 
reflected, 
Lucerna. Shell imperforate white, above flattifh, beneath gibbous: 
aperture tranfverfe 2-toothed. 
Inhabits Chemn. conch.g. tab. 126. fig. 1108, 1109. 
Shell 1 5 lines broad, white not ftriate, with very deprefled whorls. 
Lampas. 
