536 WORMS. TESTACEA. 8r. Helix. 
Shell black immaculate, with fpiral fubconvex ftrim and ? 1 
whorls, each ot the ^whorls in the upper-part armed wit)' 
marp fpines; aprture large wide and white: outer lip ’ 
inner-one thick. 
Navia. SHeli tranfverfely grooved^ white with biackilh 
fpire pointed, with flattifh whorls, the firft larger 
round. 
Kamm-. Cab. Rudolst, tab. 8, Jig. j. 
Inhabits thejauthern Ocean: a little more than ah inch long* 
Afpera. Shell pointed cinereous tranfverfely ftriate : whorls toot'’^^ 
and marked with red ftreaks. 
Chemn. conch, g. tab. 136.7% 1239, Iz6o. 
Inhabits fea marflies of Coromandel, — 8 lines long. 
%hell ovati pellucid, fometimes dirty grey-brown with 
fpiral ftri® ahd undulate longitudinal tuberculate , 
•whorls 7-8, each armed with \ z Ipines : aperture ovate, out«|l ' 
‘ - lip acute, inner-one brown gloffy, throat pale with p«l)“^ ' 
punctured red llreaks, ! 
•Sfagnalls. SfigU imperforate, ovate tapering to a point, fomewhat 
gular by feveral longitudinal wrinkles: aperture ® ’ 
• r . long-oval. 
Donovan's Brit, fulls, ii. tab. ^l.fig. 3. 
Da costa Brit, conch, tab. 5. n. 
Pennant Brit. Zaol. iv.' tab. Sh.fig. 136. A. 
Lister conch, tab. l^Z.fg. 21, Anim angl. t. 2. f. 2I. 
Lifer Exete anat. tab. Z, fig. 3, 4. 
Bonan recr. and Mnfi. kirch, Z-fitg. 55. 
Gualt, test. tab. 3, I. L. Khin ofir. t. ^.fi, 69. 
Argenv. conch, tab. zj.fig i, z. Zoom. t. si/. 5,b. 
SebaMufi. 3. tab. 39.7%. $2, 53. 
Born Mufi. Caf, Vind. ted. tab. 16. fig. 16. 
Chemn. conch g. tab. i^S-fig. *237 1240. 
Inhabits llill waters of : 2 ^ inches long,- ^ 
Shell thin brittle, whitilh yellowilh or cinereous, rarely hornf ® 
black, fometimds glabrous, fometimes finely ftriate longit'“'‘'j 
nally : nvhorls 6 or 7, the firft ventricofc: lip repand and f 
margined. 
•Fragilis. Shell imperforate, ovate tapering to a point, round 
cidt aperture oblong-oval. 
Lister tab 8. fig. 3. Seha Mufi 3. t. ig.fi. 41 46. 
Martini Berl. Mag. 4. tab. g. fig. 35. 
Schroet fluficonch. tab. 7. fig, 8. 
2. Argenv. conch, tab. 27. n. S.fig. 4, 
