As might be expected, great diversity likewise prevails in the appearance of the chrysalides; but to these it will be more convenient hereafter to refer, in the preliminary notices to the respective genera. One of the most remarkable, however, may be mentioned, that of _Morpho Menelaus_, which has the nasal prominence of the prothorax produced into a long curved horn, which extends to the middle of the abdomen. In another species of the same group, the head is obtuse, projects considerably, and is curved upwards at the extremity, exactly like the beak of an ancient galley. Our acquaintance with the geographical distribution of the diurnal lepidoptera was long very imperfect, and it may yet be said to be very far from complete. The older naturalists seem to have been but little alive to the importance of the subject, and even if it had been otherwise, the means they possessed for illustrating it were comparatively limited. Those who had opportunities of collecting specimens in foreign countries, valued them merely as specimens, and, in general, kept no record of their localities, or natural history properly so called. Collections from China and the East Indies were indiscriminately mixed, in their way homewards, with others from the Cape of Good Hope; and American species were in like manner mingled with such as are proper to the West Indian islands. Hence it followed, that Fabricius and others were so often led into error when they indicated the native country of the kinds they described: but, indeed, the author just named did not very frequently attempt this, but merely says, “From the Indies”--an expression which means nothing more explicit, in his acceptation of it, than that the species in question is exotic. Linnæus, also, when he uses the same word, means indiscriminately either the East or West Indies. The indications of localities in modern works are in general copious and accurate, but they have not hitherto been made the basis of any general and satisfactory view of the distribution of the species.