38 
Wood's Linnean 
names. 
19 GRANDIS 
large 
simpleton’s 
20 ACHATINA 
variegated 
21 sOLIDA 
strong 
22 SOLIDISSIMA 
thick 
23 SUBTRUNCATA 
abrupt 
24 AUSTRALIS 
southern 
25 ListEeRt 
Lister’s 
26 TENUIS 
thin 
MACTRA. 
Lamarchian 
Genus. 
Mactra Gm. 3259, from Maxima, §e. of Ch. 
vi. f. 228.—? Lam.—M. radiata, 
Spen. Sk. Nat. v. pt. 2, p. 107. 
Nicobar Isles. 
— Ch. xi. f. 1957, 8.—Reeve, I. Mac. f. 
51.—? MW. maculosa, Lam. 
Philippines. 
—— Lin. Sys.—Ch.'vi. 230, f. 229.—Speng. 
—Don. pl. 61, f. 1, 3, 4, 5—Lam. 
—Br. Mol. i. 351, pl. 22, f. 1, 5.— 
Trigonella zonaria and gallina, Da 
Cos.—. truncata, Mont.—Turt. 
Britain, §c. 
— Ch. x.f 1656—Gould. Mas.—Han. 
R. 8. 28.—M. gigantea, Lam. 
U. States, N. A. 
— Da Cos. 198.—Mont. 93; Sup. 37, 
pl. 27, f. 1.—Br. Mol. i. 358, pl. 21, 
f. 8; pl. 22, f. 2.—IL. stultorum, 
Pen.—. lactea, Poli, Sic. pl. 18, 
f. 18, 14.—ML. triangula, Philip. Sie. 
i. 11.—JL. erassatella, Lam.—Del. 
B.C. pl 3, £6, Britain, Se. 
Mesodesma Dil. 141.—Mya A. Gm. 3321, from 
Mya Nove Zelandia, of Ch. vi. f. 
19, 20.—Mes Chemnitzii, Desh. E. 
M. Vers.—Quoy, Ast. Z. iu. 504, 
pl. 82, f. 9, 10,11.—Mes. Nove Zel. 
Reeve, I. Mes. f. 21. New Zealand. 
Lutraria Gm. 3261.—. piperata, Gm. 3261. 
— Mya Hispanica, Ch. vi. f. 21.— 
Trigonella plana, Da Cos.— JL. com- 
pressa, Pult. and Mon.—Zellina pl. 
Don. pl. 64, f. 1—LZ.c. and pz. 
Lam.—Listera ce. Turt. D. B. pl. 5, 
f. 1, 2.—Lut. Ins. Macg.— Lavigno 
calcinella, Récluz. — Scrobicularia 
pip. Br. Mol. 826, pl. 15, f. 5. 
Britain, Se. 
Syndosmya Mont. 572, pl. 17, f. 7.—Amphidesma 
t. Lam.—Deles. R. C. pl. 4, f. 6.— 
S. t. Récluz. Rev. Z. 1843.—Br. 
Mol, 3, 323, pl. 17, f. 11. 
Britain, §e. 
Authority—Synonyms—Locality. 
