CARDIUM.
Cardo dentibus baseos binis, marginis solitariis remotis acutis. Valvulæ gibbæ, hinc figura cordis.
Bucardium was the epithet applied in the written copy to the members of this genus, to which the Solen bullatus of the 'Systema' was correctly referred. Mactra had not then been separated.
C. costatum. Buc. sulcis costis elevatis membranaceis.
The original description has been somewhat enlarged in the press, by the addition of "brevissimis," "et extrorsum flexis," "fossula distinctus; at vero ille sub anno quasi duplex"; "minus vero ad latera sulcata," moreover, was simply "ad alterum latus": the only expression omitted in printing was "reflexus," which followed "Anus margine."
C. Cardissa. Buc. compressum, valvis carinatis, natibus contiguis.
"Colum. Aqu. 19. t. 16" (cited also in the 'Systema') was quoted in the MS. from which the "vix," "subcontigui," "remotus, validus, fossula distinctus," were absent. The "Rima" was termed "subrotunda" instead of "cordata."
C. hemicardium. Buc. subquadrilaterum: valvulis carinatis, umbonibus distantibus.
"Fasciis" was a misprint for the original "facies": "sulcis convexis" was written "sulcis excavato-rugosis." There was no specific appellation.
C. medium. Buc. subcordatum subangulatum; valvulis angulatis sulcatis lævibus.
The prefatory remarks were the only portion of the printed description to be found in the MS. The species was not named, but was quoted in the 'Systema' before the publication of its details.
C. aculeatum (misprinted "muricatum"). Buc. subcordatum, sulcis convexis, linea cava exaratis, versus apicem dentatis.
The intended name was verum.
C. echinatum. Buc. subcordatum, sulcis acutis exaratis linea elevata ciliata aculeis inflexis plurimis.
"List. Ang. 188. t. 5. f. 33, Pectunculus echinatus," "Bonan. 2. t. 90," "Gesu. Aq. 131, 132," "Faun. Suec. 1339," "Rondel. Aq. 22," were the original synonyms, to which our author had subsequently added "Klein, 139. t. 10. f. 40." "Alba" followed "gibba"; "parum antrorsum inflexis" was the reading for the printed "erectis subulatis"; "extrorsum" for the "uti extus": "brevioribus. Anus lævis, sutura simplici prominula," "recurvi," "fossula distinctus," were emendations.
C. tuberculatum. Buc. subcordatum, sulcis obtusis nodosis transversim striatis.
"Gualt. t. 71. f. m." was a correct additional synonym.
C. isocardia. Buc. cordatum, sulcis imbricatis squamis fornicatis.
"Klein, 138. isocardia fragum" had been interpolated by Linnæus; hence the name, which was not in the original. The "fossula distincti" has replaced the earlier "validi."
C. fragum. Buc. subcordatum subangulatum, sulcis notatis semicirculis elevatis.
By the addition of "mala" to the erroneously cited figure of Gualtieri, our author has virtually repudiated it. "Spinosæ" followed "Pruni;" the fallacious "s. rubris" was not present, nor "sæpe" either; "anteriore" stood in the place of "postico," and "postico" in that of "antico." The descriptions of the "rima" and "anus" have been added: "recurvati" and "fossula distincti" were amplifications.
C. Unedo. Buc. subcordatum, sulcis lunulis coloratis.
C. muricatum. Buc. subrotundum sulcatum, lateribus muricatis.
C. magnum. Buc. oblongum, sulcis angulatis latere serratis.
I had hoped to have found the 19 a misprint, but the MS. and the printed copy agree precisely in every particular.
C. flavum. Buc. subovatum sulcatum, latere altero scabrum, altero dentatum.
The redundant "subovata" was not in the copy, where the remark was made that the species resembled the shell subsequently termed Chama cor, the figure of which (Gualt. t. 71. f. E.) had been cited, but erased in the MS. The ideal hence derived is a very different shell from the one supposed identical. No mention is made of lateral teeth: was it then a veritable Cardium?
C. lævigatum. Buc. ovatum, striis læviusculis longitudinalibus.
I do not consider this (the B. striatum of the MS.) to be identical with the C. lævigatum of the 'Systema.'
C. serratum. Buc. ovale læve, antice serratum.
"Ovata" stood in the place of the printed "obovata": "curvatus" and "parvi" were subsequent to the MS.
C. triste. Buc. ovatum læve, rima anoque obsolete striatis.
The 'Museum' was referred to for this shell previously to the publication of the details. Curious to relate, the species was wholly omitted in the twelfth edition of the 'Systema.' It was, in all probability, a Mactra, which genus had not been constituted at the period when the description of C. triste was issued.
C. pectinatum. Buc. subcordatum, striis hinc longitudinalibus, illine transversalibus.
The erroneous reference to Gualtieri was not present in the written copy.
Mention was made in the 'Systema' of a Solen bullatus, for a more detailed account of which the reader was referred to the 'Museum Ulricæ.' No such species appeared in the published edition; but the omitted shell (a veritable Cardium) was thus described in the unprinted version:—
Buc. bullatum. B. subrotundum, antice crenato-hians.
Rump. 143. t. 44. f. N. Pecten bullatus.
Testa subrotunda, inflata, gibba, fragilis, pellucida, substriata, rufo nebulosa, antice hians, margine serrato. Umbones tumidi, obtusi, reflexi. Rima minima brevissima. Ani regio obsoleta. Dens cardinis fere unicus, minimus. Marginales solitarii, remoti, compressi, majores.