244 
Citreus. 
Cop. 
Gigas, 
WORMS. TESTACEA. 64. Chama. 
Chemn. conch. 7, t25. 47. fig» 479—482. 
2. Orange-colour. Regenf. conch. 1. tab. 9. f. 30. 
Inhabits /ndia, America and the Mediterranean. 
Shell white, with yellowifh, reddifh, brownifh, or violet lines 
and veins, ; 
Shell oblong, plaited, fpinous. 
Tnhabits Argenville conch. tab. 20, fig. K, 
Shell imbricate, about z inches long, 12 broad; citron-colour 
or red with an orange inner margin, 
64, CHAMA. ‘Animal a Tethys: jfhell bi- 
valve, rather coarfe: Aznge with a callous 
gibbofity, obliquely inferted in an ob- 
lique holiow : anterior flope clofed. 
Shell roundifh, fmooth: beaks recurved: anterior flope 
with a gaping fent. — 
Lifter, tab. 275. f.111. Barbut, tab. 6. f. 1. 
Bonan."recr. 2, f. 88. Muf. Kirch, 2. fig. 92. 
Rumpf. Muf. tab. 48. f. 10. — Cualt. te. tad. 71, E, 
Seba Muf. 3. tab. 86. fig. 1. 
Ginann, adriat. tab. 2. ta5. 19. figs 129. 
Rnorr Vergn. 6. tab. 8. fig. 1. 
CLemn. conch. 7. tab. 48. fig. 483. 
Inhabits the Adriatic and Cafpian feas : very large. 
Shell covered with a blackifh fkin, under which it is varied with 
white and brownifh: thick, roundith, tranfverfely wrinkled, 
clofed; the margin very entire; valves refembling a turgid 
heart: deaks reddith, large, twifted like a ram’s horn: poite- 
rior flope retufe, a little elevated in the midd!e; anterior flope 
ovatc-oblong. 
Shell plaited, with arched fpales: pofterior flope gaping, 
with crenulate margins. ' 
Lifer, iab. 351—354.  Barbut, tab. 6. figs 2. 
Rumpf. Muf tab. 42, A,B. Arg. concbetab, 23. E. 
Ponan. recr. 2. fg 83,34. Muf. Kirch. 2 Jig. 82, 85. 
Petiv. Amb, aq. tab.5, f. 13. tab. 7, figs 13+ 
Gualt, tefl. tab. 92. f. A—G. tab. 93. f. B. 
Klein ofir. tab. Yo, fig. $3. . Olear. Muf. tab, 29. f.6,, 
Knorr l'ergn. 1. tab. 19. f. 5, and 6, tal, 36, f. 35. 
Regenf. conch.1, tab. 10. fig. 48. 
Murray teflaceof, tab. 2. f. 12, 20. 
Chemn, conch. 7. tab. 49, f. 492—496. 
2, Chemn, 
