I HAVE been asked by a French observer, M. A. Gros of Marigny (Jura), France, if I can put him into touch with entomologists interested in the Ephemeridæ. M. Gros is the author of an illustrated ...

ENTOMOLOGISTS will give a cordial welcome to this first instalment of the catalogue of British insects, the preparation and publication of which has been taken up with such commendable zeal by our ...