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being the femur. rubrum. And I am much disappointed
with this result, for I have always supposed this Pembina
grasshopper was a kind peculiar to that locality. A correspond-
ent has in Texas has favored me with colored drawings which
he made of the migratory species which invaded the country
around Austin A. D. 1849 & again 1854. This is no longer than fem. rub.
but has the hind thighs blue inside, and other plain marks of specific
difference.

I know there is much difference between scientific men, as
to what constitutes a species, some elevating every variety, every
shade of difference which is cognizable to the senses, to the rank
of a species. It is one of the easiest things in the world to make
new species. Take 50 specimens of any common insect, and look
them carefully over, and you can easily pick out probably a
half dozen, that differ so manifestly, one in one point, another
in another, that correctly described, they will appear to every
one to be distinct; nay you would not hesitate to regard them
as being truly different, if you had not in your hands other
specimens of every grade between each of them and the
common type. When I see in European works the long string
of synonyms which multitudes of their species have acquired,
I think with Shakespeare - "Some of Nature's workmen have