Gualt. t. 87. f. C.
Testa reliquis magis gibba, albido-flavescens, sulcis xxx obtusis, transversim nodosis: nodis transversis, obtusissimis, imbricatis. Intus albida. Margo dentibus xxx argutiusculis. Rima sulco rhombeo circumscripta, disco decussatim vix manifeste striato. Umbones distantes ad neutrum latus flexi.
A. senilis. A. oblique cordata, octosulcata, lævis, antice hians, rima obtusangule striata.
Lister (without numerals!) was referred to in illustration; the early unimproved account of the beaks and ligamental area ran as follows: "Umbones distantes, oblique incurvati. Rima hians striata transversim ad angulos acutos": "et profunde immersis" was an addition.
A. granosa. A. subcordata, sulcis muricatis, rima obtusangule striata, utrinque angulum formante.
The name was evidently borrowed from Rumphius, whose Pecten granosus ("143. t. 44. f. K.") was referred to in the manuscript, though neither quoted in the printed copy nor in the 'Systema' (ed. x.). "Bonan. 2. n. 73," and Lister (without numerals) were also cited.
A. decussata. A. lenticularis, decussatim substriata, apicibus reflexis.
For a detailed account of this shell, to which no specific name was attached in the MS., the 'Museum Ulricæ' was referred to, previous to its publication.
A. pallens. A. lenticulari-subobliqua, decussatim striata, rima brevi.
This was the type referred to in the 'Systema.'