Testa ovata lævis involuta. Apertura linearis, utrinque dentata. Spira occultata intra testam.
C. mappa. C. subturbinata characterisata, macula longitudinali dentata.
"Pet. Amb. t. 16. f. 2." was an omitted synonym. The terminal remark is an improvement upon the earlier "Noscitur linea utrinque dentata in superficie scripta."
C. Arabica. C. subturbinata characterisata, macula longitudinali simplici.
"Denticulis testaceis" and the description of the variety were additions by the hand of Linnæus.
C. Argus. C. subturbinata subcylindrica, maculis annularibus.
The synonyms of Petiver (t. 97. f. 6) and Bonanni (f. 263), quoted in the 'Systema,' were also present in the MS., where "2. s. 1" was in the place of "duabus." The "pallidis" was a misprint for the written "pallidæ." The account of the variety was subsequent to the copy.
C. testudinaria. C. obtusa cylindrica, extremitatibus depressis.
"Pet. Amb. t. 8. f. 7." was an unprinted synonym.
C. carneola. C. subturbinata pallida, fasciis incarnatis.