Neither the erroneous reference to d'Argenville, nor the specific name derived from his figure, is to be found in the MS. The proposed appellation was L. vitrea. "Simillima Cassid, lapillo, sed glabra, et columella crenata" is the unprinted remark.
B. spiratum. Morion umbilicatus, anfractibus distinctis canaliculo.
The specified colouring was "alba, maculis longitudinalibus fuscis"; "pone bifidum" followed "integrum." The intended name was M. canaliculatus.
B. glabratum. Morion umbilico descendente flexuoso.
d'Arg. Conch t. 12. f. G.
"Testa oblonga, acuminata, obtusiuscula, glaberrima, anfractibus confluentibus, Neritarum maximarum pondere. Color albo-flavescens, nitidus. Apertura obliqua, profunde emarginata. Labium exterius integerrimum. Labium interius antice reflexum adnatum, dein solutum brevius flexuosum, descendens ad basin. Sulcus profundus distinguit basin testæ. Umbilicus pone labium interius descendens ad basin sulco".
B. virgineum. I can find no account of this shell in the written copy.
B. undosum. The nearest approach to this species seems the variety B. of the Murex succinctus (the shell so named in the 'Mantissa').
M. lævis, sulcis transversis lævibus, angulo marginali.
d'Arg. Conch. t. 12. f. N. Bon. 3. f. 47.