CHAM ACE A. 69 



Genus V. MYCETOPUS, UOrbigny. 



1. M. Soleniformis, UOrbigny, Voy. dans I'Am. mer.pl.66.f. 1-3. 



Reeve, Conch. Syst. v. l.pl. 94-. f. 1 and 2. 



2. M. siliquosus, JJ Orhigny, Mag. de Zool. 1835. 



Anodon siliguosa, Spix ; Anodon lo7igina, Spix ; Anodon 

 pygnicBa, Spix. 



Family XIII. CHAMACEA. 



Genus I. ETHERIA, Lamarck. 



1. E. Cailliaudi, Ferussac, Cailliaud's Voy. a Meroe,v.2.pl.51.f.l-3. 



Etheria tubifera, Sowerby. 



2. E. Lamarckii, Ferussac, Mem. Soc. d'Hist. Nat. v. 1. p. 359. 



Etheria elliptica, Lamarck; Etfieria trigonula, Lamarck; 

 Ostrcea elliptica, Wood. 



3. E. semilunata, Lamarck, Ann. du Mus.v.lO. p. -iO^. 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 

 genusmay be adopted in a future number of the" Conchologia Iconica." 



Genus II. CHAM A, Linnceiis. 



1. C. aeruginosa, Lamarck, Anim. sans vert. v. 6. p. 583. 



2. C. arcinella, Lamarck, Enc.meth.pl. 197. f. 4. 



Arcinella spinosa, Schumacher. 



3. C. asperella, Lamarck, Anim. sans vert. v. 6. p. 584. 



4. C. corrugata, Broderip, Trans. Zool. Soc. v. 1. p. 305. pi. 38. f. 7- 



5. C. crenulata, Lamarck, Enc. meth. pi. 196. f. 2. 



6. C. cristella, Lamarck, Anim. sans vert. v. 6. p. 585. 



7. C. croceata, Lamarck, An. s. v. v. 6. p. 587 ; Delessert, pl.l3.f.6. 



8. C. decussata, Lamarck, Anim. sans vert. v. 6. p. 584. 



9. C. echinata, Broderip, Trans. Zool. Soc. v.l.p. 305. pi. 39. f. 5-7. 



10. C. exogyra, Conrad, Journ. A. N. S. Phil. 



11. C. florida, Lamarck, Anim. sans vert. v. 6. p. 583. 



