Dear Sir,—
I am sorry I cannot answer your question.2 The Tipulidæ, or gnat family, is a very difficult one and not well known.3 No trustworthy evidence has been advanced of the introduction or appearance in this country of a new species; but it seems to me probable that some English species have lately increased in number.—
Dear Sir, yours faithfully,—C. Darwin.
Please cite as “DCP-LETT-13311,” in Ɛpsilon: The Charles Darwin Collection accessed on