_Fauna._--No attention whatever has been paid, practically as yet, as to whether any distinctive animal life exists in glacières. So far, I have seen none myself. The Rev. G. F. Browne, in four instances, found a large red-brown fly nearly an inch long, which is supposed to be _Stenophylax Hieroglyphicus_ of Stephens; and at Chapuis, he obtained an ichneumon of the genus _Paniscus_. At Font d'Urle, Monsieur Villard captured a blind specimen of a coleoptera, _Cytodromus dapsoïdes_. A variety of rotifer, _Notholca longispina_, is now living in the Creux-de-Souci. In Skerisora, remains of bats have been found, not very different from those now living in the neighborhood.[34] It is, in any case, certainly remarkable that the same kind of fly should have been discovered in several glacières in different localities; and it may some day be shown that there is a special insect fauna. Certainly the subject is worth investigating.[35] [34] See Part I.: Ausable Pond, page 81, and Part III.: Creux-de-Souci, page 207; Font d'Urle, page 213; Chapuis, page 216; La Genollière, page 219; Skerisora, page 245. [35] In June, 1899, I mentioned these facts to Monsieur Armand Viré, director of the Biologic Laboratory in the catacombs of the Jardin des Plantes in Paris. He was much interested, and promised to make a careful investigation of the matter. _Flora._--The flora of glacières has been as little observed as the fauna. There are scarcely any references to such a thing as glacière plant life in literature. Whether there is a special flora in any glacière cave is still an open question. In the cases of several boulder taluses, there is no doubt that, even if there is not a special flora, at least that the plants near the ice beds are greatly retarded every year in their development. Probably the flora among the boulders blooms a month or six weeks later than the flora in the immediate vicinity. In the cases of the Cave of Paradana and of the Kuntschner Eishöhle it is reported that the plant life becomes more and more arctic in character towards the bottom of the pit.[36] [36] See Part I.: Ausable Pond, page 80; Giant of the Valley, page 83, note 7; Ice Gulch, page 85; Spruce Creek, page 91. See Part III: Spruce Creek, page 188; Paradana, page 237; Kuntschner Eishöhle, page 241.