We must not forget, however, that, as has been stated, there are other ants which do occasionally collect seeds, and thus appear to show traces of this remarkable instinct; but as far as I have yet seen, it is always possible to distinguish them readily from true harvesters. Still I think it very likely that in hot climates the division between harvesters and non-harvesters may be bridged over by a complete chain of intermediates. Here two more questions suggest themselves for more complete future solution. (1) Do true harvesters which store seed in granaries ever attend upon aphides and seek for sweet secretions? (2) Do occasional harvesters ever form granaries? In any case the name of "the provident one" is only, I suspect, fully deserved by a limited number of ants, and Æsop, in his well-known fable, might as properly have made the dialogue which ends in the recommendation to "dance in winter as he piped in summer," take place between two ants as between an ant and a grasshopper, as far at least as their respective foresight is concerned. Why it is that one ant should require stores of food in the winter of which other ants have no need, is one of the many problems which only patient watching and careful comparison and experiment can help us to solve. There are not wanting those among the many winter visitors of the south who have time in abundance or superabundance at their disposal, and might help to clear up these and many other mysteries, and to them I would strongly recommend the study of the habits of plants and animals as a pastime, if nothing more. The way is open: it is not difficult to follow, and it leads to very pleasant places. APPENDIX. A. The following are the species of ants which I have observed on the Riviera, and principally at Mentone; the actual locality where my notes were taken being given in every case. _Family Formicidæ._[41] [Footnote 41: Ants have been divided into three tribes, the two first of which, _Formicineæ_ and _Ponerineæ_, are distinguished by the latter having a contraction in the abdomen not found in the former, and both are separated from the third tribe, _Myrmicineæ_ by having but a single scale on the petiole, while in _Myrmicineæ_ there are always two nodes or protuberances on the petiole. It is important to remember the difference between the first and the last named tribes, as we shall find that all the true harvesters belong to _Myrmicineæ_. I have not seen any of the representatives of the second tribe in the south.] _Tribe Formicineæ._--Petiole (or stalk which unites the thorax and the abdomen) of one joint, and furnished with a single vertical scale, abdomen not contracted.