i. 310;

on the Cynipidae and Cecidomyidae, i. 314; on the jaws of _Ammophila_, i. 342; on _Corydalis cornutus_, i. 342; on the prehensile organs of male insects, i. 342; on the antennae of _Penthe_, i. 343; on the caudal appendages of dragon-flies, i. 344; on _Platyphyllum concavum_, i. 356; on the sexes of the Ephemeridae, i. 361; on the difference of colour in the sexes of _Spectrum femoratum_,