_Corrigans_ and _follets_ only show themselves at night, or in the twilight. No one knows where they pass the day-time. Some _lutins_ or _follets_, after the manner of Scotch kelpies, live solitary lives in lakes or ponds (whereas _corrigans_ are socially united in groups or families), and amuse themselves by playing tricks on travellers passing by after dark. Souvestre records a story showing how the _lutins_ can assume any animal form, but that their natural form is that of a little man dressed in green; and that the _corrigans_ have declared war on them for being too friendly to men.[95] From what follows about _lutins_, by M. Goulven Le Scour, they show affinity with Pucks and such shape-shifting hobgoblins as are found in Wales:--'The _lutins_ were little dwarfs who generally appeared at cross-roads to attack belated travellers. And it is related in Breton legends that these _lutins_ sometimes transformed themselves into black horses or into goats; and whoever then had the misfortune to encounter them sometimes found his life in danger, and was always seized with great terror.' But generally, what the Breton peasant tells about _corrigans_ he is apt to tell at another time about _lutins_. And both tribes of beings, so far as they can be distinguished, are the same as the elfish peoples--pixies in Cornwall, Robin Good-fellows in England, goblins in Wales, or brownies in Scotland. Both _corrigans_ and _lutins_ are supposed to guard hidden treasure; some trouble horses at night; some, like their English cousins, may help in the house-work after all the family are asleep; some cause nightmare; some carry a torch like a Welsh death-candle; some trouble men and women like obsessing spirits; and nearly all of them are mischievous. In an article in the _Revue des Traditions Populaires_ (v. 101), M. Sébillot has classified more than fifty names given to _lutins_ and _corrigans_ in Lower Brittany, according to the form under which these spirits appear, their peculiar traits, dwelling-places, and the country they inhabit. Like the fairies in Britain and Ireland, the _corrigans_ and the Cornish pixies find their favourite amusement in the circular dance. When the moon is clear and bright they gather for their frolic near menhirs, and dolmens, and tumuli, and at cross-roads, or even in the open country; and they never miss an opportunity of enticing a mortal passing by to join them. If he happens to be a good-natured man and enters their sport heartily, they treat him quite as a companion, and may even do him some good turn; but if he is not agreeable they will make him dance until he falls down exhausted, and should he commit some act thoroughly displeasing to them he will meet their certain revenge. According to a story reported from Lorient (Morbihan)[96] it is taboo for the _corrigans_ to make a complete enumeration of the days of the week:--