« Although bearing so strong a likeness to vitrea, that instead of describing it at large, we need only particularize its points of dissimilarity, we cannot hesitate to assent to the perfect specific distinctness of this graceful little shell. The regular, though very minute raised lines, that densely encircle the entire surface of its larger whorls, enable us readily to distinguish a well preserved specimen from its closely allied congener [vitrea]; and even where an unnatural smoothness results from long attrition upon the shore, the practised eye of a conchologist will detect each individual by its more compact style of gyration. » Forbes & Hanley: A history of British Mollusca and their shells vol. III, London 1853, p.127.

« Shell: very similar to that of Hyala but with fine spiral striae. Protoconch of about two whorls, first whorl slightly elevated, nucleus depressed, similar to that of Hyala ; smooth (except for “some fine spiral lines” according to Fretter & Graham, 1978) » – W. F. Ponder: “A review of the genera of the Iravadiidae”, Malacologia vol. XXV (1), p.54. – Regarding the genus Ceratia, the keys given by Ponder are: shell elongate, semitranslucent; outer lip not expanded, strongly prosocline; fine spiral sculpture devoid of peripheral ridge.