THE WEEKLY ENTOMOLOGIST. 
95 
say for some thousands of years, wo 
may reasonably look to find a very 
sensible divergence of forms, — suffici- 
ently so to set naturalists disagreeing, 
as to whether they ought to call the 
forms by two different specific names, 
or whether the two should be consid- 
ered varieties merely of each other, — 
This is the view I took in reference 
to mutation of Forms, and Transmuta- 
bility of species ; and I now propose 
to lay before you the insects which to 
my thinking as nearly demonstrate 
the truth of that theory as demon- 
stration can be arrived at. In the 
American Lepidoptcra, collected 
chiefly by the late Edward Doubleday, 
and putting, as far as I am able, the 
European analogues side by side, you 
will see a striking illustration of the 
common phrase, “ the same with a 
difference.” Several years before the 
death of the late J. E. Stephens, I 
was talking with him on the subject 
of these very specimens, when he told 
me a friend had one day brought to 
s 
him, by way of a joke, a lot of United 
States Lepidoptera, they being the 
analogues of British species, when on 
opening the box, believing them to be 
British, his involuntary exclamation 
was, “ what a wonderful assemblage 
of varieties.” 
To be continued. 
HORyE HAW ORTIIIANiE, 
By W. E. Kirby Esq. 
Part X. 
“ Papilio ( Pyrameis ) Cardui. 
Habitat larva m. Jul. Carduo Ian- 
ceolato. Imago f Jul. Carduetis, et 
per hyemem. Eemina ova ponit tem- 
pore vernali. 
Papilio ( Hipparchia ) Semele. 
Habitat Imago in sylvaticis et er- 
icetis m. Jul. frequens. 
Papilio ( Melanagria ) Galathea. 
Habitat larva in gramine. Imago 
i. Jul. Sylvaticis humidis satis infre- 
quens. 
Papilio ( Lasiornmata ) Megcera. 
Habitat larva in gramine i. Aug. 
Imago i. Jul. i. Aug. Sepimentis. 
Papilio ( lasiornmata ) TEgeria. 
Habitat larva War. Mai. Jun. in 
graminibus. Imago i. Ap. i. Jun. i. 
Aug. in sylvis ; vulgaris. 
Papilio Jurtina ( Hipparchia Janira.) 
Habitat copiose in pratis. Imago i. 
Jun. 
Obs. Jurtinam et Janiram in cop- 
ula junctas srnpe vidi.” 
Linnaeus mistook the sexes of Jan- 
ira for distinct species. 
“ Papilio Pilosellcc ( Hipparchia 
Tithonus.) 
Habitat larva in Hieracio Filosella 
i. Jun. Imago in Jul. in compascuis 
vulgaris. 
Obs. Mas paullo minor quam fem- 
ina est magisque obscura, et in pagina 
alarum anticarum maculam fuscam 
gerit. 
Papilio ( Grapta ) C-album. 
Habitat larva in Hurnulo Lupula 
m. Jun. m. Aug. Imago i. Jul. i. 
Sept, in sylvaticis satis iufrequens. 
Papilio ( Vanessa ) Urticce. 
Habitat larva in Urtica dioica i. 
Jun. m. Aug. Imago i. Jul. i. Sept, 
et per hyemem ; in Hortis et passim 
omnium vulgatior. 
