CHAP. V. | CLASSIFICATION. 103 
The number of species of Butterflies is about the same as that 
of Birds, while the six families of Coleoptera selected, comprise 
more than twenty thousand species, far exceeding the number of 
all other vertebrates. These families have all been recently cata- 
logued, so that we have very complete information as to their 
arrangement and distribution. 
LEPIDOPTERA DIURNA, OR BUTTERFLIES. 
Fam. Fam. 
1. Danaide. 9. Libythzide. 
2. Satyride. 10. Nemeobiidee. 
3. Elymniide. 11. Eurygonide. 
4, Morphide. 12. Erycinide. 
5. Brassolide. 13. Lycenide. 
6. Acreide. 14. Pieride. 
7. Heliconide. 15. Papilionide. 
8. Nymphalide. 16. Hesperide. 
COLEOPTERA, OR BEETLES. 
Fam. Fam. 
1. Cicindelide ... Tiger-beetles. 4, Cetoniide ... Rose-chafers. 
2. Carabide ... Ground-beetles. 5. Buprestide ... Metallic Beetles. 
3. Lucanide ... Stag-beetles. 6. Longicornia ... Long-horned Beetles. 
The above families comprise the extensive series of ground 
beetles (Carabide) containing about 9,000 species, and the Longi- 
corns, which are nearly as numerous and surpass them in variety 
of form and colour as well as in beauty. The Cetoniide and 
Buprestide are among the largest and most brilliant of beetles ; 
the Lucanide are pre-eminent for remarkable form, and the 
Cicindelide for elegance; and all the families are especial 
favourites with entomologists, so that the whole earth has been 
ransacked to procure fresh species. 
Results deduced from a study of these will, therefore, fairly 
represent the phenomena of distribution of Coleoptera, and, 
as they are very varied in their habits, perhaps of insects in 
general: 
