Icthyura Palla, n. sp.Length of body, including anal tuft, .56 of an inch. Expanse 1.10 inches. General color of body and primaries pale gray, the latter rather sparsely sprinkled with dark brown scales. Palpi brown above, scarcely projecting beyond the head, third joint concealed by the hairs of the others. Front slightly brownish, a tuft of pale gray scales at the base of each antenna, the usual deep brown mark from between the antennæ to the top of the thoracic crest. Primaries with the usual transverse lines almost white. The basal line makes a bend outward on the median vein; from this it goes in a straight course to the submedian vein; from this to the posterior or inner margin it curves a little outward. A second line extends from the costa about one-fourth of the distance from the base obliquely to the posterior margin, near the posteriol angle.