WORMS. TESTACEA. 6o. Ma@ra. 211 
Inhabits the Indian Ocean; refembles the laft, but is more equal 
thinner and more convex; the anterior part flattifh. with an 
obtuíe margin, 
*Stultorum. Shel} femitranfparent fmooth glofly, obfoletely radiate, white 
Grandi: ? 
® Solida. 
without and purplifh within. — . 
Pennant Brit. Zool. iv. tab. 52. 6g. 42" Barbut. t. 4. f. 3. 
Lister conch. tab. 281. Gualt. test. tab. 71. fig. C. 
Adanf, feneg. tab. 17. fig. 16, Knorr. Vergn. 6. t. 6. f. 1. 
Murr. fund. test. tab. 2. fig. 10. 
Born. Muf. Caf. Vind. teft. p. 50. P1gn, 
Chemn conc’ 6. tab. 23. Fig. 224 7227. 
Inhabits Ezropean and American Seas: Size of a hazel nut. 
Shell very convex, fomething triangular, brown teftaccous or 
cinereous, with or without very faint rays. 
Shell femitranfparent fmooth, fawn colour with pale rays: 
the beak and hinge placed beyond the middle. 
Chemn,. conc. 6. tab. 23. fig. 228. 
Inhabits refembles the lait, but is 2 1 inches long, 5 2 broad, 
gaping at the extreme angle, the anterior fide more produced. 
Shell opa! e fmoothifh fubantiquated. 
Pennant Brit. Zool. iv. tab. $0. fig. 43. A. t. 52. f. 43. 
Donovan's Brit. Sbelis. ài. tab. 61. Da Cofla. tab. 15. fg. 1. 
Lifer Conch, tab. 253. fig. 87, 88. Barbut. 1. 4. f. 2. 
Liter Anim. Angl. tab. 4. fig. 24. 
Bonann, rects 2. tab 51.52. Muf. Kirch. 2. tab. 80, 81. 
Klein Offr. tab. 10. fig. 42. Knorr. Vergn. 6. t: 8. f. 5. 
Chemn. conc. 6. tab. 23. fig. 229. 230. 
2.- Chemn conc. 10. tab, 70. fig. 1656. 
Found very commonly on European Shores. 
Shell very thick ftrong, white yellowifh cinereous or brown, 
frequently marked with blue or pale orange belts; in a live 
itate fmooth, in the dead with a few high tranfverfe ftriz like 
ribs: lateral /eetb {mall elongated with a large hollow, the 
middle tooth (mall, 
9? Lutraria. Shell oval-oblong fmooth, without lateral teeth. 
Donovan's Brit Shells. ii. tab. 58. 
Pennant Brit. Zool. W. tab. $3. fig. 445 
DaCosta Brit Conch tab. 17° fig. 4. 
Lister Conch. tab 455. An. Angl. tab. 4. fiz. 19. 
Bonan. recr. et Muf. kirch. 2. fig. 19. 
Rumpf. Muf tab, 45. M. Gualt. test. tab. 90. A. 2. 
Chemn. conc. 6. tab. 24. fig. 240, 241. 
Inhabits European Coasts, near the mouths of rivers. 
dz. Shell 
