_Dilophonota Ello_, Linn. (Pl. XII., Fig. 2), is greenish-brown with a yellow subdorsal line, and _D. Hippothöon_ (Fig. 4), yellow with a whitish subdorsal. Neither of these has oblique stripes. _D. Œnotrus_, Cram. (Fig. 3), has neither stripes nor subdorsal, but is uniform brown above, passing into green beneath. _Protoparce Albiplaga_, Walk. (Pl. XIII., Fig. 2, also Mérian, Pl. III., and Abbot and Smith, I., Pl. XXIV.), pale green with large yellow, black-bordered patches surrounding the spiracles. _Pseudosphinx Tetrio_, Linn. (Pl. XIII., Fig. 3), and _P. Scyron_ (Fig. 4) are black with broad transverse belts, yellow and white respectively, encircling the middle of each segment. These light bands serve very effectively to break up the uniform surface of the large bodies of these insects, but the whole marking is suggestive of distastefulness. R.M.] [122] [The species referred to is placed by Butler in Hübner’s genus _Hyloicus_. R.M.] [123] [= _Ellema Coniferarum_, of Butler’s revision. R.M.] [124] [= _Dilophonota Ello_ of Butler’s revision. R.M.] [125] “Synopsis of the North American Sphingides.” Philadelphia, 1859. [126] [The larvæ of many moths which feed on deciduous trees during the autumn and hibernate, are stated to feed on low-growing plants in the spring, before the buds of their food-trees open. On the other hand, low-plant feeders, such as _Triphæna Fimbria_, &c., are stated to sometimes feed at night in early spring on the buds of trees. The habits and ontogeny of these species are of special interest in connection with the present researches, and are well worthy of investigation. R.M.] [127] “Neuer Beitrag zum geologischen Beweise der Darwin’schen Theorie.” 1873, Nos. 1 and 2. [This principle, in common with many others which have only been completely worked out of late years, is foreshadowed by Darwin. Thus, he states when speaking of inheritance at corresponding periods of life: “I could give a good many cases of variations (taking the word in the largest sense) which have supervened at an earlier age in the child than in the parent” (“Origin of Species,” 1st ed., 1860, p. 444). In the case of inherited diseases also: “It is impossible to ... doubt that there is a strong tendency to inheritance in disease at corresponding periods of life. When the rule fails, the disease is apt to come on earlier in the child than in the parent; the exceptions in the other direction being very much rarer.” (“Variation of Animals and Plants under Domestication,” 1st ed., 1868, vol. ii., p. 83.) R.M.] [128] [If the reddish-brown spots on the larva of _S. Populi_ have the protective function assigned to them by Mr. Peter Cameron (Trans. Ent. Soc. 1880, p. 69), it can be readily understood that they would be of service to the insect in the fourth stage, and the backward transference of this character might thus be accelerated by natural selection, in accordance with the above principles. (See, also, note 100, p. 241.) R.M.]