I.
Ontogeny and Morphology of Sphinx-Markings, p. [177].
The genus Chærocampa, [177]; C. Elpenor, [177]; C. Porcellus, [184]. Results of the development of these species and comparison with other species of the genus, [188]. The genus Deilephila, [199]; D. Euphorbiæ, [201]; D. Nicæa, [207]; D. Dahlii, [208]; D. Vespertilio, [209]; D. Galii, [211]; D. Livornica, [215]; D. Zygophylli, [217]; D. Hippophaës, [218]. Summary of facts and conclusions from this genus, [223]. The genus Smerinthus, [232]; S. Tiliæ, [233]; S. Populi, [236]; S. Ocellatus, [240]. Results of the development of these species, [242]. The genus Macroglossa, [245]; M. Stellatarum, [245]; comparison of this with other species, [253]. The genus Pterogon, [255]; P. Œnotheræ, [256]; comparison with other species, [256]. The genus Sphinx, [259]; S. Ligustri, [259]; comparison with other species, [261]. The genus Anceryx, [264]; A. Pinastri, [265]; comparison with other species, [268].
II.
Conclusions from Phylogeny, p. [270].
The Ontogeny of Caterpillars is a much abbreviated but slightly falsified repetition of the Phylogeny, [270]. Three laws of development, [274]. The backward transference of new characters to younger stages is the result of an innate law of growth, [278]. Proof that new characters always originate at the end of the development; the red spots of S. Tiliæ, [282].
III.
Biological Value of Marking in general, p. [285].
Markings of Caterpillars most favourable to inquiry, [285]. Are the Sphinx-markings purely morphological, or have they a biological value? [287].