=Geometrae.= Brimstone (_Luteolata_) Early Thorn (_Bilunaria_) Belted Beauty (_Zonaria_) Brindled Beauty (_Hirtaria_) Waved Umber (_Abruptaria_) Small Engrailed (_Crepuscularia_) Engrailed (_Biundularia_) Sloe Carpet (_Pictaria_) Netted Mountain (_Carbonaria_) Mottled Grey (_Multistrigaria_) Satyr Pug (_Satyrata_) Marbled Pug (_Irriguata_) Campanula Pug (_Campanulata_) Brindled Pug (_Abbreviata_) Oak-tree Pug (_Dodoneata_) Double-striped Pug (_Pumilata_) Early Tooth-striped (_Carpinata_) Shoulder Stripe (_Badiata_) Many-lined (_Polygrammata_) Tissue (_Dubitata_) In addition to the above, a few species of the _Tortrices_, several of the _Tineae_, and one or two of the Plume Moths (_Pterophori_) are out during April. MAY Little or nothing will be obtained by digging during May, yet a number of pupae may be found among grass and leaves under trees, and also attached to the leaves and stems of low plants. These pupae include those of several of the butterflies, among which may be mentioned _Machaon_, _Selene_, _Euphrosyne_, _Aurinia_, _Megaera_, _Ianira_, _Rubi_, _Astrarche_, _Icarus_, _Bellargus_, _Corydon_, _Lucina_, and _Sylvanus_. Larvae may now be taken in abundance by beating the boughs of oaks and other trees, and also by examining low plants. The hybernating butterflies are still on the wing, and the following are also out: Swallow Tail (_Machaon_) Large White (_Brassicae_) Small White (_Rapae_) Green-veined White (_Napi_) Bath White (_Daplidice_) Orange Tip (_Cardamines_) Wood White (_Sinapis_) Small Pearl-bordered (_Selene_) Pearl-bordered (_Euphrosyne_) Greasy Fritillary (_Aurinia_) Glanville Fritillary (_Cinxia_) Speckled Wood (_Egeria_) Wall (_Megaera_) Marsh Ringlet (_Typhon_) Small Heath (_Pamphilus_) Green Hairstreak (_Rubi_) Small Copper (_Phl[oe]as_) Brown Argus (_Astrarche_) Common Blue (_Icarus_) Clifden Blue (_Bellargus_) Holly Blue (_Argiolus_) Mazarine Blue (_Semiargus_) Grizzled Skipper (_Malvae_) Chequered Skipper (_Palaemon_) There is a great increase in the number of moths this month, and much good work may be done by means of light traps and by the examination of fences. Many moths are driven from their resting places early in the morning by the direct rays of the rising sun, and then seek out a spot where they are better sheltered, and where they are consequently less easily found. Hence the advantage of searching fences early in the morning. The May list includes: =Sphinges.= Small Elephant (_Porcellus_) All species of the genera _Smerinthus_ and _Macroglossa_ Some of the Clearwings (_Apiformis_, _Sphegiformis_, and _Culiciformis_) Cream-bordered Green (_Chlorana_) Green Silver-lined (_Prasinana_)