In the foregoing description of the method of classification butterflies only are mentioned; but the division and arrangement of moths is carried out in just the same manner except that the system is a little more complicated. The number of moths is so large in comparison, that we are able to select from them some very large groups the species of which possess features in common. These groups are termed tribes, and are again divided into families just like the butterflies. Thus the arrangement of moths includes tribes, families, genera and species. We will take an example by way of illustration as we did before, and ask the reader to verify the same by comparison with our table:

Example.—The 'Common Tiger' ([Plate X], fig. 3).

I have already said that the Latin and Greek names of butterflies and moths are not at all necessary to the young entomologist. It is quite possible to be well acquainted with the natural history of these creatures, and to derive all the pleasure and benefits that the study of them can afford without the knowledge of such names; but most entomologists go in for them, often to the entire exclusion of the popular English terms.

There are those who consider themselves (or would have us consider them) expert entomologists because they have the power

to vomit forth a long list of scientific names of butterflies and moths which (to them) have no meaning whatever; and it is astonishing that we meet with so many youngsters who can rattle away such terms, and, at the same time, are totally ignorant of the real nature of the creatures they name.

If you wish to be a naturalist in the true sense of the term, study your specimens, and take but little pains to commit their hard names to memory; and you will then find that the latter will gradually become your own property without any special effort on your part. Your continued reference to illustrated works and museum collections will bring them to you almost unconsciously, and you will generally find your entomological vocabulary extending as rapidly as your cabinet becomes filled.

Again, with regard to the meanings of the scientific terms, don't trouble much about them. It unfortunately happens that in a very large number of cases these names are ill chosen, and do not in any way refer to the distinguishing characteristics of the species to which they are applied. You will observe, too, if you look at the table, that many insects have two scientific names applied to the species, one being placed in brackets after the other. In such cases both these names are in common use, having both been applied by independent authorities, and the insertion of the two will prove an assistance at times.

It is a common practice with entomologists, in their communications, to use only the second or specific name of insects. Thus, they would speak of the Brimstone Butterfly as Rhamni, and not Gonopteryx Rhamni. When writing a communication, however, they very commonly place in front of the specific name the initial letter of the first or generic name. Thus the full title of the butterfly just mentioned would be abbreviated to G. Rhamni.

Having said so much concerning the principles of classification and nomenclature, we will pass on to the practical portion of the entomologist's work.