"Cincta" was a press emendation. The only written synonym was "Faun. Suec. 1298". H. OCULUS-CAPRI. _H._ marginata perforata subcarinata. "Pet Gaz. t. 76. f. 6." was indicated as a synonym. The name was Latinized from the "_l'oeil de bouc_" of d'Argenville who has, however, represented an utterly different shell. H. CAROCOLLA. _H._ submarginata imperforata carinata, labio interiore recto. D'Argenville's figure was, evidently, not at first considered sufficiently illustrative to be referred to: it was not cited in the written copy. "Conicoplaniuscula" was the reading for "convexa", "segmento circuli" (the 1/4 without any sequence was absurd) for "semiovata": the size, as usual, was not given. H. CORNU-MILITARE. _H._ marginata imperforata subcarinata, labio interiore explanato. The deceptive figure of Gualtieri was not at first cited. H. CORNEA. _H._ marginata convexa umbilicata, spira plana. "Faun. Suec. 1304" was in place of the reference to 'Lister's English Conchology,' a work apparently unknown to our author when he first drew up the Museum Catalogue. I doubt the identity of this shell (the intended name for which was _tabellaris_) with the cornea of the 'Systema.' H. CORNU-ARIETIS. _H._ utrinque depressa. "List. Hist. t. 136. f. 40" was written by our author in the manuscript copy. H. AMPULLACEA. _H._ subrotunda, sursum ventricosior glabra. The original reading of "anfractus superne ventricosi" was "abdomen superne ventricosius". The erroneous reference to Gaultieri was not at first attached to the description. The species of the Museum was evidently distinct from that of the 'Systema.' H. GLAUCA. _H._ subrotunda acuminata, labro postice marginato. H. CITRINA. _H._ umbilicata convexa obtusa. The final remark was an afterthought. H. ARBUSTORUM. _H._ marginata perforata convexo-acuminata, ore suborbiculari, margine duplici, antice elongato. "Faun. Suec. 1295" was the only synonym; the work of Lister on English Conchology not having been at first known to Linnæus. H. UNGULINA. _H._ marginata perforata spiralis convexa, ore suborbiculato. The "Gualt." was a misprint for the written "Rumph." H. LUTARIA. _H._ ovata-oblonga umbilicata, interne coloratiore. "Habitat frequens in lutosis fluviis, lacubus." May not the _Valvata piscinalis_ be the shell intended? H. PERVERSA. _H._ ovato-oblonga subperforata glabra. "Pet. Gaz. t. 44. f. 7", and "Grew. Mus. t. 10. f. 9" cited in the 'Systema', were also referred to in the MS. "Alba", and "in quibusdam", were interpolations in the Linnean handwriting: _H. sulphurata_ was the intended designation. H. IANTHINA. _H._ subrotunda obtusa patula diaphana.