138 M. 0. A. L. Morcn on Conchological Nomenclature, 



strange that Browne has not quoted any figure of Lister, who 

 gives several of this genus, of which only one species was known, 

 from the West Indies. Lamarck's name Pyrula (1799 and 180] ) 

 must be retained for Ficus and Ficula, Swainson. 



Argobuccinum is a name as good as Pholadomya, Volutomitra, 

 &c. The type is Ranella Argus. 



Auris, Klein, 1753, was already used by Linnaeus in the first 

 edition of the ' Sy sterna Naturae/ 1735. 



Haliotis was first described by Lister, and named by him 

 Auris marina. 



Auris Mida>, Klein, is composed of two words, and therefore 

 cannot be used. 



Cavolina was established by Gioeni, ]783, in his ' Descriz. di 

 una nuova famiglia, &c./ and Abildgaard re-described the genus 

 in 1791, one year before Bruguiere published the name Cavolina, 

 without description, in the plates of the ' Enc. Meth/ 



Clio, Browne (1756), was adopted by Linnaeus, although he 

 had never actually seen it. u Clionis genus mihi non visum e 

 CI. Brownio mutuatus sum." Linnaeus has only added specific 

 names to Browne's descriptions. Linnaeus here affords an ex- 

 ample of founding species upon figures and descriptions, — a 

 practice for which Gmelin has been often censured. Browne 

 mentions in his specific description " vagina triquetra," which 

 proves clearly that he meant a Cleodora, of which a species is 

 figured. The name given by Peron and Lesueur was therefore 

 unnecessary, and cannot be acknowledged. 



Cassidea, Brug. (1792), is a synonym of Cassis, and cannot be 

 used for Oniscia, which is the sixteenth species in the list of 

 twenty-one enumerated as belonging to that genus. 



Cassidula, Humphrey (not Cassidulus), is distinct from Cassi- 

 dula, Lam. ( = Echinanthus, Breyn). 



Bursa of Petiver and Buonanni is a vernacular name, and 

 cannot be used generically. 



Thais of Bolten is not a synonym of Monoceros, as the only 

 species of the latter genus is the last in order among the eight 

 species mentioned. 



Cylindrus is only mentioned by Breyn as an example of mono- 

 thalamous shells. 



Operculatum, Linn. The binomial nomenclature was first 

 employed by Linnaeus in the ' Mus. Tessinianum/ 1753, where 

 the shells are described in the same manner as in the tenth and 

 twelfth editions of the ' Systema Naturae ' : — 



lingulata 1. Pinna linguiformis subfalcata. 



lacera 2. Area striis membranaceis laceris. 



lseve 3. Operculatum, tab. vi. f. 5. Testa fere lapidea, 



orbiculata a latere, superne raagis gibba, ab in- 

 feriore plana, punctis elevatis. Ignoti generis. 



