District around Maldon, Essex. 39 Nocturni. Smerinthus ocellatus, L.—Generally distributed, but not very common. S. populi, L.—Danbury; Hazeleigh; Woodham Ferrers. Larvae generally on willow or sallow. Poplars are of very rare occurrence in the district. S. tillae, L.—Hazeleigh; Maldon. Sphinx convolvuli, L.—One specimen at Hazeleigh Rectory in 1875. S. ligustri, L.—Hazeleigh; Danbury. Not common. Acherontia atropos, L.—Maldon. One larva in 1877, two in 1881. (Mr. E. A. Fitch). Choerocampa porcellus, L. — Maldon. Occasionally at honeysuckle. (Mr. E. A. Fitch). 0. elpenor, L.—Maldon; Woodham Mortimer; Woodham Walter. Larvae on Epilobium hirsutum ; very rarely on Galium mollugo. Macroglossa stellatarum, L.—In some years common; not observed frequently of late. Sesia myopiformis, Bk. — Hazeleigh; Maldon, not un- common. S. ichneumoniformis, F.—Hazeleigh, one imago in 1874. As hellebore does not occur, its food-plant with us is, I presume, Lotas corniculatus. S. tipuliformis, L,—Hazeleigh; Maldon. Probably occurs generally in old gardens. Zeuzera aesculi, L.—Hazeleigh ; Maldon. Cossus ligniperda, F.—Occurs generally. Hepialus hectus, L.—Frequents two woods in Hazeleigh. H. lupulinus, L.—Common. H. sylvinus, L.—Hazeleigh Wood. Limacodes testudo, S. V. — In two woods in Hazeleigh. Beaten from oak. Zygaena filipendula, L.—Hazeleigh. Confined to a very small area. Nola cucullatella, L.—Common, especially in the larval state. N. strigula, S. V.—Hazeleigh Wood. Once only. Halias prasinana, L.—Woodham Ferrers. Nudaria senex, H.—Hazeleigh. A single specimen. N. mundana, L.—Hazeleigh ; Purleigh. Calligenia miniata, Forst.—Hazeleigh Wood. Not com- mon. Lithosia mesomella, L.—Hazeleigh ; Purleigh. L. lurideola, Tr.—Common.