xix, 
Pomatiaside. : 
Pomatias, Studer, 1789. 
(type) P. elegans, Mill. 
The departure of the familiar name Cyclostoma is to be regretted, but 
areference to Studer’s original description of Pomatias, and his fixed 
type, will prove the necessity of the alteration. 
Aciculidee. 
Acicula, Hartman, 1821. 
(type) A. lineata, Drap, 
Capulidee, 
Capulus, Montfort, 1810. 
(type) C. ungaricus, L. 
Calyptraea, Lam., 1799. 
(type) C. chinensis, L. 
Lamellariide. 
Lamellaria, Mont, 1811. 
Montagu proposed this named for membranaceus, and haliotoidea, 
no special type being named. The former species belongs to Cuvier’s 
earlier genus Pleurobranchus, and therefore the name is here used for the 
second species. These remarks are made, since authors recently have 
used Marsenia, which is many years later in date. Even if this be used 
the family name will not be Marseniada, as given by Dr. Bergh, but 
Marsentide, 
Velutina, Fleming, 1828. 
(type) V. levigata, D. 
Naticide. 
Natica, (Adanson) Scopoli, 1777. 
According to Dr. Dall ‘‘ it may be considered positively settled that 
the typical Natica has an umbilicus furnished with internal ribs, and a 
suleate shelly operculum.” Of our British species, catena, Da Costa ; 
sordida, Philippi; Montacuti, Forbes ; grenlandica, Beck ; and Alderi, 
Forbes, appear to belong to the section Naticina, Guilding (1834)—type 
N. nitida, Donovan; while N. islandica, Gmelin, should be placed in 
Amauropsis, Mérch, 
