Nyctitherium, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 127. _N. velox_, Marsh, loc. cit. _N. priscum_, Marsh, loc. cit., p. 128. Nyctilestes, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 215. _N. serotinus_, Marsh, loc. cit.