The eyes, eight in number, are divided into three groups. In the middle of that weird segment which is at once head and thorax, two large and very convex eyes gleam side by side, reminding us of the Lycosa’s [5] superb lenses; they are apparently in both instances for use at close range, because of their great convexity. A ridge of protuberances arranged in a wavy line serves as an eyebrow and gives them a fierce appearance. Their axis, which is almost horizontal, can hardly allow them more than lateral vision. The same remark applies to two other groups, each composed of three eyes, which are very small and placed much farther forward, nearly on the edge of the sudden truncation that forms an arch above the mouth. On both right and left the three tiny lenses are set in a short straight line, their axis pointing laterally. On the whole, both the small and the large eyes are so arranged that it can by no means be easy for the animal to obtain a clear view ahead. Extremely short-sighted and squinting outrageously, how does the Scorpion manage to steer himself? Like a blind man, he gropes his way: he guides himself with his hands, that is to say, his pincers, which he carries outstretched, with the fingers open, to sound the space before him. Watch two Scorpions wandering in the open air in my rearing-cages. A meeting would be disagreeable, sometimes even dangerous for them. Nevertheless, the one behind always goes ahead as though he did not perceive his neighbour; but, as soon as he touches the other ever so little with his pincers, he at once gives a sudden start, a sign of surprise and uneasiness, followed at once by a retreat and a change of direction. To recognize the irascible one thus overhauled, he had to touch him. Let us now instal our prisoners. I shall never learn all I want to know by turning over stones and making chance observations on the adjacent hills: I must resort to keeping the animals in captivity, the only manner of inducing them to reveal their domestic habits. What rearing-method shall I employ? One in particular appeals to me, one which will leave the creature its full liberty, which will relieve me of the cares of catering and which will enable me to inspect my captives at any hour of the day, from year’s end to year’s end. This seems to me an excellent means, far superior to the others, so much so that I reckon on a magnificent success.