Linné (1764:662) gives a broader description, mentioning "anfractibus 20 s. 30 ...", which indicates the use of ... [details]
Linné (1767:1239) added additional references as compared to the 10th ed. (1758): Fauna Svecica (1761) = sensu ... [details]
"In Aqaeductu ad Sevillam" [in an aqueduct near Sevilla], Spain. [details]