NATURAL HISTORY. 
85 
ROOM IV.] 
creasing in number as the shell enlarges in diameter. 
These shells are greatly altered in form according to their 
position; if they are separate they are broad and expanded, 
if crowded they are narrow and high. In Balanus it is 
the case that is lengthened, and in Chirona it is the valves 
that are produced and altered in shape. 
The Barnacles or Goose-shells, ( Lepas ,) as they have 
been called, from the extraordinary belief that they were 
the origin of the Barnacle geese, have a compressed 
body, which is placed on a long pedicle arising from be¬ 
hind the head of the animal. This pedicle is sometimes 
naked, and at others covered with haity or hard shelly 
scale-like appendages; the case of the body is generallv 
strengthened with one or more plates, which are similar 
in form, and are in the same manner sunk in the skin of 
the body, as the plates before referred to, which surround 
the opening. In those kinds, as the Pollicipes , which 
have many plates, their tip is sometimes produced beyond 
the attached part. Larger species are used to flavour 
soup by the Chilians and the Chinese, arid eaten as a 
delicacy at Madeira. 
The following is the arrangement of the families of 
annulose animals , with references to the Tables containing 
them. 
Sub-kingdom, Longicornes—2, 3 Phryganidae—4 
Annulosa. 
Eupoda—3 
Cyclica—3 
Clavipalpi—3 
Aphidiphagi—3 
Ord. IV. Hymenop- 
TERA. 
I. Ptilota. 
Class I. 
Insecta. 
Section I. 
Order II. Orthop- 
TERA. 
Forficulidae—3 
Securifera — 4 
Pupivora—4 
Actileata—4 
Diploptera—4 
Anthophila—4 
Mandibulata. 
Order I. Coleof- 
tera. 
Carnivora — 1 
Palpicornes—1 
Clavicornes—1 
Brachelytra—1 
Lamellicornes—1, 2 
'Serricornes—2 
Melasoma—2 
Taxicornes—2 
Stenelytra—2 
Trach elides—2 
Rhynchophora—2 
Platysorna —-2 
Libellulidae—4 
Ephemeridae—4 
Myrmeleonidae — 4 
Panorpidae—4 
Termitidae—4 
Order III. Neurof- 
tera. 
Blattidae—3 
Alantidae—3 
PhasmidiB—3 
Gryllidae—4 
Locustidae—4 
Papilionidae—5 
Pieridae—5 
Nymphalidae—6, f 
Lycenidae—7 
Hesperiadae—7 
Sphyngidae -—8 
Sesiadae—8 
Co3sida3 -8 
Ord. I. Lepidop- 
Section II 
Hatjstellata 
tera. 
