CHAMACEA. 69 
Genus V. MYCETOPUS, D’ Orbigny. 
1. M. Soleniformis, D’Orbigny, Voy. dans l Am. mér. pl.66.f. 1-3. 
Reeve, Conch. Syst. v. 1. pl. 94. f. 1 and 2. 
2. M. siliquosus, D’ Orbigny, Mag. de Zool. 1835. 
Anodon siliquosa, Spix ; Anodon longina, Spix ; Anodon 
pygmead, Spix. 
Famity XIII. CHAMACEA. 
Genus I. ETHERIA, Lamarck. 
i. E. Cailliaudi, Feruwssae, Cailliaud’s Voy. a Méroé,v.2. pi.51.f.1-3. 
Ettheria tubifera, Sowerby. 
2. E. Lamarckii, Ferussae, Mém. Soe. d’Hist. Nat. v. 1. p. 359. 
Etheria elliptica, Lamarck ; Etheria trigonula, Lamarck ; 
Ostrea elliptica, Wood. 
3. E. semilunata, Lamarck, Ann. du Mus.v.10. p. 404. pl. 32. f. 1,2. 
Etheria plumbea, Ferussac ; Etheria transversa, Lamarck ; 
Etheria Carteroni, Michelin. 
It has been contested amongst naturalists that the Mulleria of Mr. 
Sowerby is nothing more than an obscure variety of an Etheria. Upon 
lately examining this remarkable shell in the collection of Thomas Norris, 
Esq., we were much struck with its appearance, and it is probable that the 
genus may be adopted in a future number of the ‘‘ Concno.oeia Icontca.” 
Genus II. CHAMA, Linneus. 
eruginosa, Lamarck, Anim. sans vert. v. 6. p. 583. 
arcinella, Lamarck, Enc. méth. pl. 197. f. 4. 
Arcinella spinosa, Schumacher. 
. asperella, Lamarck, Anim. sans vert. v.6. p. 584. 
. corrugata, Broderip, Trans. Zool. Soc. v. 1. p. 305. pl. 38. f. 7, 
. crenulata, Lamarch, Enc. méth. pl. 196. f. 2. 
. cristella, Lamarck, Anim. sans vert. v. 6. p. 585. 
>. croceata, Lamarck, Au.s. v. v. 6. p. 587 ; Delessert, pl.13.f.6. 
. decussata, Lamarck, Anim. sans vert. v. 6. p. 584. 
. echinata, Broderip, Trans. Zool. Soc. v.1.p. 305. pl. 39. f. 5-7. 
C. exogyra, Conrad, Journ. A. N. S. Phil. 
. C. florida, Zamarch, Anim. sais vert. v. 6. p. 583. 
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