[54] This was first described as part of the larva of a Dragon-fly. It is now recognised as belonging to a Scorpion.
[55] Protolycosa (Roemer).
[56] Menopoma, Menobranchus, &c.
[57] Ophiderpeton Brownriggii.
[58] Diplichnites.
[59] These are known in some of the smaller species, but not as yet in the larger.
[60] Hylonomus. See Fig. facing this chapter.
[61] Mastodonsaurus or Labyrinthodon.
[62] Palæosiren Beinertii of Geinitz.
[63] Hyleopeton.