The _Mantis religiosa_ is described by Fabre as contemplating the female for a long time in an attitude of ecstasy. She remains still and seems indifferent. He is small and she is large. At last he approaches; spreads his wings, which tremble convulsively; leaps on her back, and fixes himself there. The preludes are long and the coupling itself sometimes occupies five or six hours. Then they separate. But the same day or the following day she seizes him and eats him up in small mouthfuls. She will permit a whole series of males to have intercourse with her, always eating them up directly afterward. Fabre has even seen her eating the male while still on her back, his head and neck gone, but his body still firmly attached. (J.H. Fabre, _Souvenirs Entomologiques_, fifth series, p. 307.) Fabre also describes in great detail (ibid., ninth series, chs. xxi-xxii) the sexual parades of the Languedoc scorpion (_Scorpio occitanus_), an arachnid. These parades are in public; for their subsequent intercourse the couple seek complete seclusion, and the female finally eats the male. An insect (a species of _Empis_) has been described which excites the female by manipulating a large balloon. "This is of elliptical shape, about seven millimeters long (nearly twice as long as the fly), hollow, and composed entirely of a single layer of minute bubbles, nearly uniform in size, arranged in regular circles concentric with the axis of the structure. The beautiful, glistening whiteness of the object when the sun shines upon it makes it very conspicuous. The bubbles were slightly viscid, and in nearly every case there was a small fly pressed into the front end of the balloon, apparently as food for the _Empis_. In all cases they were dead. The balloon appears to be made while the insect is flying in the air. Those flying highest had the smallest balloons. The bubbles are probably produced by some modification of the anal organs. It is possible that the captured fly serves as a nucleus to begin the balloon on. One case of a captured fly but no balloon was observed. After commencing, it is probable that the rest of the structure is made by revolving the completed part between the hind legs and adding more bubbles somewhat spirally. The posterior end of the balloon is left more or less open. The purpose of this structure is to attract the female. When numerous males were flying up and down the road, it happened several times that a female was seen to approach them from some choke-cherry blossoms near by. The males immediately gathered in her path, and she with little hesitation selected for a mate the one with the largest balloon, taking a position _upon his back_. After copulation had begun, the pair would settle down toward the ground, select a quiet spot, and the