-- Rubi.
CHRYSOPHANUS Phlaeas.
-- Chryseis.
-- Dispar.
POLYOMMATUS Boeticus.
-- Argiolus.
-- Alsus.
-- Acis.
-- Arion.
-- Corydon.
-- Adonis.
-- Alexis.
-- Aegon.
-- Agestis.
-- Artaxerxes.

Fam. HESPERIDAE.
PYRGUS Alveolus.
NISIONADES Tages.
STEROPES Paniscus.
PAMPHILA Actaeon.
-- Linea.
-- Sylvanus.
-- Comma.

It will be seen by the above list that seventy species are given as
British. Of these, five species, viz. _Papilio Podalirius_, _Erebia Ligea_,
_Argynnis Dia_, _Chrysophanus Chryseis_, and _Polyommatus Boeticus_, have
been so rarely taken as to be refused a place among the _regular_ denizens
of our island. So that we can only reckon up the small number of
_sixty-five species of true British butterflies_.

These it now remains to describe individually, but, prior to entering on
that task, I would say a few words {60} on the acquirement of scientific
nomenclature and systematic arrangement, a knowledge of which will
facilitate even our recreations in natural history, while it is absolutely
essential to carrying out the really scientific study of any department.

It is true, that the painting of a butterfly and the fragrance of a flower
can give deep pleasure to a mind quite unconscious of their Latin names,
their genus, order, or anything of the kind; but the interest of natural
objects is, I am sure, greatly augmented when we acquire some insight,
however dimly, into the wonderful mechanism of creation's plan, its
infinite gradation of forms, and their curious, subtle relationships, to
which a _good_ system of classification serves, in some degree, as an
index. I say, "_in some degree_," as a system framed in perfect accordance
with that of nature is a discovery rather to be desired than hoped for,
with the limited knowledge at present permitted to us.

Though these Latin names are generally considered as unwelcome excrescences
on the pages of _popular_ natural history works, I would yet advise the
young entomologist to master them for once, and accustom himself well to
their use. He will not find the task a very difficult one, if I may judge
from the repeated instances in which I have heard the almost infantile
progeny of my naturalist friends glibly mouthing these redoubtable word