T. personatus. T. exumbilicatus inermis convexus, labio postice diducto.
The I of the reference to Rumphius was a misprint for the written 1. A drawing of Gualtieri (t. 64. f. O), which accords not with the description of this species, was an additional synonym. The name had been added subsequently. Turbo cidaris agrees in most respects.
T. petholatus. T. exumbilicatus ovatus lævis, anfractibus sursum obsolete angulatis.
The written version furnishes us with the additional synonyms of "Gualt. t. 64. f. F.", and "Klein 40. t. 2. f. 51."; the latter (also cited in the 'Systema') was added by our author when he admitted the at first excluded 5. 6 of the synonym of Rumphius. The admission of the rounded-whorled variety? was evidently an afterthought.
T. chrysostomus. T. exumbilicatus subovatus rugosus striatus, spinis fornicatis.
"Klein 41. t. 7. f. 126" (cited in the 'Systema'), and the printed "in superiore serie majoribus", had been added by Linnæus in the original account.
T. tectum-Persicum. T. exumbilicatus subovatus, spinis obtusis reflexis, subtus papillosus.
"Forte sola varietas sequentis a loco" has been remarked by our author, who did not admit in his MS. the deceptive figure of d'Argenville.
T. pagodus. T. exumbilicatus conicus spinis obtusis concatenatis, subtus papillose striatus.
Neither "acuminata", nor the inappropriate "rotundata", were in the original account of this well-known species.