NERITA.
Testa subrotunda, obtusa. Labium interius planum, transversim truncatum, depressum.
The generic arrangement was similar to that of the printed version.
N. canrena. N. edentula umbilicata, spira mucronata, labio reflexo bifido.
When Linnæus first described this shell, under the appellation of N. musica, he did not admit a single one of the cited figures as illustrative.
N. glaucina. N. edentula convexa, umbilico simplici semiclauso gibboso dicolore.
None of the deceptive figures were at first referred to, but had been added at subsequent period; and that of Rumphius again erased. N. luteola was the intended name.
N. albumen. N. edentula subrotunda, umbilico teretinsculo.
The present heading agrees with the subsequent details, which could not be affirmed of the printed one borrowed from the 'Systema.' The MS., in some degree, clears up the extraordinary confusion in which the Linnean species was enveloped. There were two N. albumens in the written copy. The shell here described (assuredly not the lobed albumen of the 'Systema') was originally termed hepatica or luteola (for both had been erased). The true albumen was described as "edentula subrotunda, umbilico subcordato labri interioris lobo explanato" and the only figure referred to was "Rumph. t. 22. f. B." "Klein 13. Platystoma vitellum compressum" was also mentioned. This description was suppressed, and the other species retained, with the erroneous designation, and the faulty synonymy, attached. Nor was this the only change. In order to include the Natica vitellus of authors ("Rumph. t. 22. f. A. Valvata lævis prima s. vitellus" had been quoted by our author) the "aut lutea", "aut maculis albis", had been added to the earlier description: so, likewise, had been "Apertura rotundata, semicordata", and "glabrum, planiusculum, nitidum." I suspect, then, that whilst the ideal of the albumen of the 'Systema' was any hemispherical or flattened Natica with a labial lobe (such as Nat. albumen, didyma, olla, &c.), the albumen of the 'Museum', as printed, was composed of Natica rufa ("Rumph. 22. f. D." was quoted in the MS.) and vitellus (for A, not B, of Rumphius was the letter indicated in the MS.).
N. mammilla. The entire account of this common shell was added in the Linnean handwriting. The inappropriate "aut lutea" was not at first present.
N. corona. N. edentula, simplici spira spinosa.
"Pet. Amb. t. 3. f. 4.", a mere copy of the Rumphian figure, was also quoted. The 19 in the reference to d'Argenville was a misprint for the written 10. N. spinosa was the intended designation.
N. radula. N. edentula sulcata, tuberculis æqualibus.
The valvata granulata of Rumphius (t. 22. f. M.) was referred to at illustrative.
N. cornea. N. edentula, obsolete striata.
N. bidens. N.
"Obsoletis" followed "duobus": the name had been written subsequent to the description.
N. virginea. N. subedentula ovata lævis.
"Dentibus pluribus minutissimis" preceded "oris"; "Pet. Gaz. t. 11. f. 3" was in the place of the delusive figure of d'Argenville: the variety d was a subsequent addition.
N. polita. N. lævis, labiis dentatis.
The 1 in the synonym of Rumphius was a misprint for the written I.
N. peleronta. N. striata, labiis dentatis, interiore planiusculo rugoso.
The erroneous synonym was added, along with the name peleronta, to the written details: N. rufa was the original appellation.
N. albicilla. N. striata, labiis subdentatis, interiore tuberculato.
N. histrio. N. sulcata, transversim striata, labio interiore dentato.
The name, and the synonym, were added by Linnæus to the written details.
N. plicata. N. sulcata, labiis profunde dentatis, interiore rotundato, exteriore utrinque dentibus acutis conicis.
The variety alluded to was a subsequent addition. The details of the 'Museum' had been quoted, in anticipation, for this species.
N. grossa. N. sulcata labiis dentatis, interiore convexo rugoso.
N. chamæleon. N. sulcata, labiis dentatis, interiore rugoso tuberculato.
"Habitat in Banda", and "compositis" after "subtilissimis", are the unprinted additions.
N. undata. N. sulcata, labiis dentatis, interiore rugoso, tuberculato.
The erroneous figure of Gualtieri was not cited when the description was drawn up, but added to the details, along with "confluentibus. Spira acuta prominens", when the present name was substituted for the earlier nebulata.
N. exuvia. N. sulcata, labiis dentatis, interiore denticulato.