80 THE COMING OF AGE OF amount of work to be done with respect to our Insect Fauna. Mr. Fitch's admirable paper on the "Galls of Essex" read in 1881 (Trans. II., 98), and supplemented in 1887 by a paper on two new Essex gall-makers (Essex Naturalist, I., 177) fur- nishes us with an excellent example of a monograph on a most interesting group of insects, and when Mr. E. J. Lewis's paper on the "Oak Galls and Gall Insects of Epping Forest" (Essex Naturalist, XII., 41) is published we may congratulate our- selves on having been the means of giving to naturalists a very substantial body of authentic observations. The Lepidoptera, always a favourite order with collectors, have formed the subject of several communications of which the first was Mr. Gilbert Raynor's paper in 1882 on "The Macro-Lepidoptera of the District around Maldon" (Trans. III., 30). In 1889 the late Mr. Howard Vaughan gave us his "Notes on the Lepidoptera of Leigh and its neighbourhood" (Essex Naturalist, III., 123). No general list of the Lepidoptera of the County has as yet been compiled, although the first instalment, the list of butterflies, was prepared and published by Mr. Fitch in 1890 (Essex Natural- ist, V., 74) and in the same year I published a list of the species taken at Leyton and in the neighbourhood (Ibid., 153 and supplementary records, VIII., 128). The materials for a com- plete list are in existence, and it is to be hoped that Mr. Fitch will be induced to complete the work which he has commenced so well. A preliminary list of the Arachnida of Epping Forest was contributed in 1883 by the Rev. O. Pickard-Cambridge (Trans. IV., 41) and a further contribution by Mr. F. O. Pickard- Cambridge in 1900 (Essex Naturalist, XL, 315). Natural history observations of value are incorporated with much of the faunistic work above referred to. The preparation of lists of species is undoubtedly an important and necessary part of the work of a local society—especially during the early period of its existence. No less- important is the observation of life-histories, habits, and the general relations between the living organism and its environment known under the comprehensive designation of Bionomics. Many notes and papers on Bionomics and on general natural history appear in our volumes although, as might be expected, such communications are few as compared with the purely faunistic papers. As coming under this heading I may refer to Mr. Fitch's paper on the Bean Beetle, Bruchus