WORMS. TESTACEA. 68. Mytilus. 489 
A. Parafitical: affixed as it were by claws. 
Crista galli Shell plaited fpinous; both lips rough. 
Hyotis: 
Frons; 
Barbut. tab. 11. fig, 12. Rumpf. Muf. tab. 47. D. 
Argeny. conch. tab. 20. D. Petiv. amb. tab. 20. fige 2. 
Gualt. teft. tab. 104. E. Knorr. del. tab. B. iv. fig. 8. 
Knorr Vergn. 4. tab. 10, fig. 3—85 and 5. t, 16. f. 1; 1.17. f. 1-3. 
Chemn. conch, 8. tab. 26. fig. 683, 684. 
2. Gualt. test. tab. 104. fig. D. 
Chemn. conch. 8. tab. 73. fig. 675. 
3- Davil. catal, fyfl. 1. tab. 19. fig. 100 
4. Chemn, conch. g. tab. 116, fig. 998. j. 
Inhabits the ZzZíaz Ocean and Red Sea, affixed to Gorgonia : 
frell purple-violet pale cinnamon or bay, rough with raifed 
dots, within honey-colour; nearly equivalve clofed with 
§-8-10 oblique or ftraight acute plaits: hollow at the hinge 
triangular, 
Shell plaited and imbricate with broad compreffed fcales: 
both lips {mooth. 
Barbut. tab. 11. fig. 3. Gualt. test. tab. 103. Ac 
Argenv. Zoomorph. tab. 12. fig. F. | 
Chemn. conch. 8. tab. 75. fig. 685. 
Inhabits the Oceaz, on beds of Coral ; fhell dirty greenifh-yellow 
lamellate, the plaits curved here and there and befet with 
hollow grooved nucleis 
Shell plaited fmoothith: one lip rough. ‘ 
depen. conch. tab. 19. D. Guaits test. tab. 104. C. 
Knorr Fergn. 4 tab. 8. fig. 5. US. 
Born. Muf. Caf, Vind. teft, p. X21. vign. fig. be 
Chemns, capt 5- taP. 75. figs GeO. Mj) ili ziv voe 
Inhabits the American Ocean, on Coral beds : fhell reddifh blueifh 
or brown, generally oval with the margin plaited each fide and 
denticulate : /ower-vatve glabrous and grooved in the middle; 
xpper-valve rough with raifed dots at the margin and an ele- 
vated rib in the middle. | 
B. Flat or comere[fed into a flattened form and fightly eared. 
Margariti- Shell flattened, nearly orbicular, with a tranfverfe bafe im 
ferus. 
_bricate with toothed tunics. . 
Barbut. tab. 10. fig. 4. Rumpf. Muf. tab. 47. F. 
Argenville conch, tab. 20. A. Gualt. teft. t. 84. /^ E, F, Ge 
Lifer, tab. 221. fig. 56. tab. 223, 224. 
Bonan. recr. and Muf. Kirch. 2. fig. 1. = 
Petiv. amb. aq. tab. 20. fig. 4—7. ; "á 
Knorr Vergn. 2« 1,25. f- 1—3 and 4. 2: 18, f. 1. 
VOL.IY.-Oe Born 
