16 JOURNAL OF CONCHOLOGY, VOL. I4, NO. I, JANUARY, I913. 



The next species is lavis. This spelling is an erroneous form ot 

 the Latin levis, probably adopted to distinguish the two words levis 

 smooth, and levis light. The epithet levis has priority, but the 

 bruntteus (an unclassical name for brown) of Draparnaud in 1801 is 

 more descriptive. 



The genus Milax is an utterly unmeaning and artificial word, made 

 by Dr. Gray, who ought to have known better, by transposing the 

 letters of Limax. The name Amalia (I presume from the Greek 

 a/;iaAos, tender, soft) was given by Moquin-Tandon when he 

 separated it from Limax. Its first species is sowerbyi, named in 1823 

 by Ferussac, from specimens sent by Mr. G. B. Sowerby from near 

 London. It has a var. carinata, i.e. keeled, with a ridge on its 

 upper surface, and another nigresce?is, i.e., approaching black. The 

 other species is gagates, from the Greek word for lignite or jet. It 

 varies from black to brown. Var. plumbea — lead-coloured. 



We come next to the family Zonitidce. Zonites means girdle-like, 

 i.e., circular. 



The first genus is Vitritia, from vitiuiii, glass. Its sole species is 

 pellucida, i.e., transparent, an appropriate name, first given by Miiller 

 in 1774. Its var. depressiuscnla bears a very unclassical name, 

 denoting somewhat flattened. Its var. dilhvynii was named by 

 Jeffreys after Dillwyn (1788-1855), a celebrated conchologist, who 

 was M.P. for Glamorganshire. 



The genus Vitrea (glassy) is represented by the species crystallina, 

 of which one variety is called co7Jiplanata = levelled, i.e., with the 

 upper side quite flat, and the other cofitracta, i.e., with whorls little 

 increasing in size. 



In the sub-genus Polita (polished) there is the species lucida, i.e., 

 transparent, though the shell is scarcely semi-transparent, and 

 comparatively thick and strong. Draparnaud (after whom this shell 

 used to be called draparnaldi) is responsible for the name. It has a 

 var. albina, i.e., whitish. The species cellaria is supposed, by its 

 name, to inhabit cellars, which it occasionally does ; but in classical 

 Latin a room, and especially a store-room or pantry, is meant by cella 

 and cellariuin. I found it under the stone lid of a manhole in the 

 drain of S. Peter's Rectory, Walworth — the only shell left in that part 

 of London. 



Rogefsi, till lately known as glabra or helvetica, was so nanjed in 

 1903 by B. B. Woodward, after Mr. Thomas Rogers, of Manchester, 

 who first noticed the shell as differing from its related alliaria. Mr. 

 Taylor, however, in his Monograph gives reasons for its being called, 

 as before, helvetica, i.e., from Helvetia or Switzerland, where Dr. 

 Blum, of Frankfort, first found it. 



