The parts before us are: a poorly preserved body, vague indications of the terminal palpal joint, an antenna (probably a portion only), an unrolled tongue, the hinder pair of legs and portions of the other pairs, the greater part of the two front wings and fragments of the base of the hind wings. Of the latter, no border remains and only the base of a few of the nervules, which give scarcely any additional information as to the pterology of the insect. The only portion of the margin of the front wings which can be determined with certainty is the most essential part, the apex and the upper half of the outer border of the left wing, enough to show that its general contour was similar to that of the European Satyrids of the present epoch; but throughout the remainder all the nervules can be exactly traced. This being then the best preserved portion of the insect, we will consider its structure in detail, subsequently adding whatever can be gleaned from the examination of the other parts.[Q] [The account of the structural framework of the wing is given under the genus]. The basal two-thirds of the wing appears to have been more darkly clouded than the other portions, although in this fuscous area there is apparently a clearer space towards the upper, outer portion of the cell. There is also a distinct, darker, uniform and equal rounded spot in the middle of the outer two-thirds of the lowest subcostal interspace, nearly reaching the nervule on either side; in the specimen it appears to be broader than long by encroaching upon the next interspace in front, but this is evidently only apparent, the spots of the two wings (one of which I have stated to be a little in advance of the other) being blended. The object is so well preserved that one can see throughout the parallel series of minute punctures forming the points of insertion for the scales, outlines of the latter of which I have failed to discover. The wing is 28·5mm. long, the tip of the cell being distant 15mm. from the base of the wing; the costal nervure is inflated for a distance of 6·5mm., and the extreme width of this portion is 1mm.; the rows of punctures indicating the former insertion of the scales are ·12mm. apart. Of the body itself nothing can be predicated, unless it be that the form of the abdomen and the appearance of its tip lead us to conjecture that the specimen was a female which had deposited most of her eggs, or in which they were but partially developed. At the anterior upper extremity of the head is a dark prominence which seems to be the terminal joint of a palpus; it extends ·75mm. beyond the head and is of a nearly uniform width (·2mm.), scarcely tapering, with a rounded tip. The basal portion of an antenna, 5mm. long, is slender and apparently begins to increase slightly and very gradually in size, as in the genus Œneis Hübn. A finely impressed line, 7·25mm. long, appears to be the unrolled, though slightly curved tongue.