Thanks CD for helping his successful candidacy for F.R.S.
He is working up Arctic insects. Bombus is found at 83° N., as far north as has been reached.
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Thanks CD for helping his successful candidacy for F.R.S.
He is working up Arctic insects. Bombus is found at 83° N., as far north as has been reached.
Returns to CD a corrected proof [of "Fritz Müller on a frog having eggs on its back", Nature 19 (1878–9): 462–4].
Discusses adaptations of the pupae of, and Fritz Müller’s work on, Trichoptera.
On numerical proportions of sexes in insects; coloration. Dimorphism in dragonflies (Agrion) in which usual coloration is reversed in sexes [see Descent 1: 362–4].
Wallace seems to ride his hobby too hard.
Reports that when August Meyer confined several distinct species of Phryganeidae they coupled and produced fertile ova, indicating that some specific characters are not so important so far as reproduction is concerned [see Descent 1: 342 n. 2].
Thanks for Descent; will forward any information he has after he has studied it.
Instance of inequality in left and right anal appendices of caddis-fly.