264 TESTACEOUS MOLLUSCA. 
ther solid, lower valve inflated; yellowish clouded and radiated 
with brown, with lamelliform serrated concentric wrinkles whose 
points are white and disposed in the form of rays; ears large 
body large, not oblique, as long at least as the hinge margin: no 
tail, anterior sinus slight: nacre silvery, often irridescent: inner 
margin broad and spotted with brown: cardinal and lateral teeth 
distinct. Var. A. Paruipa. Conr. J. Philad. 7. t. 19. f. 6. 
p. 246.—Subquadrate, not clouded, compressed. 2. Sandwich 
Isles, } 
MELEAGRINA. 
Somewhat equivalve, rounded, quadrate, scaly on the outside, dorsal 
margin straight and not ninged anteriorly : a sinus at the pos- 
terior side of the shell for the passage of the byssus, at which place 
the left valve is notched and narrow ; hinge linear, and destitute 
of teeth ; Uigamental area marginal, elongated, and nearly ex- 
ternal, dilated in the centre. 
MarcaritireraA. Mar Lam.1.—Mytitus M.. Lin. Syst. 1155. 
—TLTin. Mus. Ulr. 538.—D. p. 304.—Ch. f. 717,8.—E. t. 177. 
f. 1 to 4.—W. t. 12. f. 4.—Knorr. 4. €. 18. f. 1.—List. t. 221,2 
—Avicuta M. Sow. G.—Reeve Sys. t. 110. Subquadrate, sub- 
orbicular, solid, compressed, green or olive green with white or 
pale rays, imbricated by concentric lamelle, which are produced 
at intervals in flat white tooth-like projections, in regular radi- 
ating rows : anterior edge subincurved: nacre white, usually green- 
ish towards the edges. 7. Indian Ocean, §c. 
M. Rapiata.—Avicuta R. Leach Zool. M. t. 43.—Myrtitus 
R. D. p. 302.—Knor. 2. t. 25. f. 2, 38,?—M. MarearitirEra. 
Var. Lam. Subquadrate, longer than broad, rather depressed, 
oblique, thin, pellucid, white with purple stains, girt with raised 
concentric lamelle, which are fringed with long lanceolate concave 
lamelle: auricle distinct, moderately large, short, deep, triangu- 
lar: dorsal angle sharp, anterior edge incurved. 2. W. Indies ? 
This is probably a young shell but evidently distinct from the previous. 
M. Acpina. Lam. 2.—Rumph. t. 47. B? Whitish, obso- 
letely scaly, with two constantly distinct ears: within pearly, 

1 Add likewise the A. Ecyptiaca. (Mytirus Hirunpo. var. 
Egyptiaca. Chem. 11. p. 252. f- 2018.9.—(M. Morio .W. t. 12. 
J. 13.) See also M. Toneana and M. Ovarta of Quoy. (Asir. 
voy. t. 77.) whose figures appear rather to be Avicule than 
Meleayrinz. 
