CHAMA.
The members of this genus were included in Spondylus, except cordiformis, which was referred to Bucardium.
C. gigas. Sp. plicatus squamosus, ano hiante crenato.
The species as originally defined was more comprehensive in its details than when printed; for the restricting "decussatim" had not been added, and "Gualt. t. 93. f. B." was an additional synonym. The printed additions were "obsoletis," "Margine reflexo," "exteriore duplicato longiore," and the final remark. S. imbricatus was the intended name.
C. hippopus. Sp. plicatus muricatus, ano retuso clauso dentato.
"Arg. t. 26. f. H." was an additional synonym of the MS.: the printed 20 should have been 10, as written: "ut in præcedente" was an emendation: S. asper was the proposed name.
C. Lazarus. Sp. imbricatus.
Seba was not cited: "obliquam" followed "fossam" in the MS. "Elevatis," "longitudine testæ," "productiore," "instar auris" formed no portion of the early description.
C. antiquata. Sp. subcordatus, sulcis perpendicularibus transversim striatis.
No name was attached to the original details, which appear to have been altered ("in aliis minimum cordatum impressum fuscum"), and the synonym of Bonanni added, in order to comprise that species (Cardita sulcata) which had been pictorially defined in the 'Systema.' "Gibba" was preceded by "admodum": "obsoletis" was not present. Cardita bicolor, var. unicolor was probably intended.
C. semiorbiculata. Sp. semiorbiculatus compressus, decussate striatus, rudis.
"Interior" was the earlier reading of "primarius."
C. cordata. Sp. cordatus, transversim striatus, hinc elongatus, compressus.
C. oblonga. Sp. oblongus, antice angulatus, dentibus anticis acutis.
"Unico" (error for "unicus") originally preceded "in altera valvula."
C. cordiformis. Buc. subrotundum læve, umbonibus recurvatis.
The brief description in the 'Systema' had evidently been copied in the manuscript by our author himself, who cited Gualt. t. 71. f. E. as the sole synonym. The specimen had apparently been added to the collection, subsequently to the drawing up of the first catalogue.