This affords an example of that section of the genus in which the upper wings are more or less concave on the outer margin, and the inferior pair without any prolongation behind. They are almost exclusively South American. _M. Helenor_ expands from four to five inches; surface black, with a broad band of silvery blue or violet blue, extending from the middle of the anterior margin to the anal extremity; sometimes rather narrow and well defined on the inner edge, at other times enlarged to within a short distance of the base of the wings; at the anterior extremity of this band, on the costa, there is an oblique white patch, and beyond it, on the upper wings, a single row of small white spots in the male, and two in the female. The secondary wings have an indistinct row of red crescents near the hinder margin, and the sinuosities in all the wings are white. The colour beneath is dark brown, the upper wings with three large ocelli having a white pupil surrounded with ferruginous and violet, the iris yellow, enclosed in a green circle which has a crescent of the same colour on the inner side; under wings with four similar ocelli, three of them contiguous, the interior one insulated. Towards the base of both wings are several transverse flexuose green stripes, and along the outer edge three greyish lines, more or less interrupted with red, especially in the hinder wings. The body is black above and brown beneath. [Illustration: PLATE 21. _Morpho Helenar_ From S. America. _Lizars sc._] In the variety figured there are a few yellow streaks on the under side of the anterior wings, and a red stripe at the base of each wing; at the same time the three posterior ocelli are prolonged into a point, and a spurious ocellus is observable adjoining the anterior one. Found not unfrequently in many countries of South America. MORPHO ADONIS. PLATE XXII. Fig. 1. _Godart._--Pap. Adonis, _Cramer_, Pl. 61. fig. A, B; _Herbst. Pap._ Pl. 26, fig. 3, 4; _Esper. Pap. Exotiques_, Pl. 55, fig. 2.