254 WORMS. TESTACEA. 65. Arca. 
Equilatera Shell lenticular, nearly equilateral, perpendicularly (triate 
without and within: white with chefnut fpots. 
Chemn. conch, 7. tab. 57. fig. 562. 
Inhabits the dmerican Ocean: B etembles the laft, but the fhell is 
thinner and thc beaks approximate, 
Pallens, ^ Shellienticular, fuboblique, with decuffate ftrie: anterior 
flope with avery narrow fent. 
Schrat. Einl, in conch. 3. tab. 9. f. v. 
Inhabits the Indian and Amevican Ocean. 
SZe/] equilateral, within white, without pale with here and there 
a dufky {pot or cloud and fine ftriz croffed by very numerous 
and very fine tranfverfe ones: Zea&; connivent, placed in the 
middle: Ainge arched. 
Cucullut. Shell ventricofe, with decuffate frie : anterior {lope heart- 
fhaped: valves augmented, with a curved rib within 
which is barred with violet, one of them prominent: 
beaks remote. 
Martin Befch. Naturf, 3. tab. 7. f: 15, 16. 
Chema. conch. 7, tab. 53, f. 526--528. 
Inhabits Wicdbar Ifland; ; above 2 inches long and 3 broad : the 
outlide cinnamon: probably not of this divifion. 
Magelfani- Shell rounded each fide, chefnut, and marked with decuffate 
e. ftriz : the external margin infle&ed and repand in the 
middle: beaks approximate. 
Chemn. conch. 7. tab. $3. fig. 539. 
Inhabits the ftraits of Magellan. 
Reticulate. Shell fubrhombic, white, with decuflate flriz: beaks ap- 
proximate: anterior c heart-fhaped. 
Lifter Conch. tab. 233. fig. 6 
Martin Befch Naturf. 3. i. 6, JA 
Chemn. conch. 7. t. $4. f. 5 
Inhabits refembles Ms ho Probably not of this divifion, 
Candida. Shell pellucid, rhomboid, with decaffate ftrie; the fore- 
part produced, the hind-part truncate : beaks remote: 
margin with an ovate-ciliate gape behind. 
Charme. conch 7. tab. 55. figs 542. 
2, Chemn. conch. 7. tab. 55. fig. $45. 
Inhabits the American ocean, and Be cam fhores. 
Sell white, appearing asif granulate, and covered with a black- 
ifh-brown epideriuis or fkin, 
Indica 
