135 more or less dark fuscous suffusion. The hind wings of both sexes of meyrichi are darker fuscous than those of blackhurni. Some of the scales in the patagia of meyrichi are tipped with fuscous, not so in blachburni. (Full description of moth and caterpillar, and life history published elsewhere.)* PAPERS READ. Biological Notes on the Hemiptera of the Hawaiian Isles No. 1. BY G. W. KIRKALDY. The classification of the Hemiptera has, in the past, been based entirely C) upon characters afforded by the imago, so that it is not surprising that the Hemiptera remain, in that respect, in a very unsatisfactory state. The Ontogeny of a living thttig is an epitome of its Phylo-geny, though this may sometimes be partially obscured, among Insects perhaps less in an exopterygote, paurometabolous Homomorph, as, e. g., a Hemipteron, than in an endopterygote homometabolous Heteromorph, such as a Lepidopteron (p. It is therefore remarkable that the usually easily reared Hemip-tera have been neglected in this wise to a greater extent than any of the larger Orders of Hexapoda C), neglected so greatly that a biologic note on any Hemipteron save a destructive pest is a matter for happy surprise. This is all the more remarkable when it is considered that the form of the ova and the manner of their deposition and the colours, patterns and structures of the nymphal instars, are in themselves profoundly interesting and that they also yield characters of generic or specific value. In former times, the adult wingless forms of certain Hemip-tera were rejected as being immature ; of recent years, nymphs have been mistaken for adults and relied upon for the creation of genera ! for example, Budaeus and Critobulus in the Geocor-*Bull. Ent. H. S. P. A., V. p. 24 (1907). (1) Except in the Sternorhynchous Homoptera. (2) In many Diptera, this recapitulation is exceedingly rapid, and probably greatly obscured. (3) Easily reared under sufficiently natural conditions, but, in these Islands, it is almost impossible to rear-up, at sea-level, from ova or young nymphs, bugs and hoppers inhabiting the mountain forests.