"Entomological Soc.

Trans." V., pages 223 and 335).) They seem to me to be far richer in facts of variation, and especially on the distribution of varieties and subspecies, than anything which I have read.

Hereafter I shall re-read them, and hope in my future work to profit by them and make use of them.

The amount of variation has much surprised me.

The analogous variation of distinct species in the same regions strikes me as particularly curious.