Desceiption of New Species of Nisoniades. 1G5 



the apex ; the posteriors are darker and histrons ; the terminal margins 

 are but a shade lighter than tlie rest of the wings. On the anteriors, 

 in some specimens, is a small white cellular spot. The four subapical 

 hyaline spots are constant. The median spots are larger than the sub- 

 apical, and are subquadrangular in form ; rarely, the inner spot is obso- 

 lete. The secondaries are without discal spots. Of the two rows of 

 the hind margin, the outer one is the most distinct ; in some of the 

 darker-colored males these spots are scarcely visible. Tlie cilia are of 

 the color of the wings, with their base of a paler brown. 



The coloring and markings of the sexes are very nearly alike. 

 Expanse of wings from 1,10 to 1.25 of an inch. Length of body of 

 S , .44 ; of ? , .50 of an inch. 



The female of this species has so strong a resemblance to iV^. Pei'sius 

 female, of Scudder, that the two are not readily separated by those not 

 familiar with them. It is of a smaller size (the figure is from an indi- 

 vidual of extreme size), and in addition to the difierences above referred 

 to, the following may be noted : 



It is without the bluish-gi-ay hairs which sprinkle the upper surface 

 of the primaries of N. Persius (and the bands of Brizo and Icelus)^ 

 and is also destitute of the bluish-gray scales of the hind margin above, 

 and apex beneath, of that species. The submarginal band, in its course 

 toward the inner margin, recedes less from the hind margin than in 

 Persius ^ hence it follows, that, while the fourth apical hyaline spot 

 and the first median one are equidistant from the hind margin, or the 

 latter is the nearer in this species, in Persius the latter is always rela- 

 tively the furthest removed. The sagittate spots of the submarginal 

 band in this are shorter and less acute. 



The males of the two species are not liable to be confounded. In 

 Persius i\i& anterior wings are of almost an uniform fuliginous hue, and 

 consequently much less conspicuously marked than those of Lucilius. 

 The hyaline spots are smaller and less constant. Yery rarely are there 

 two of these spots present between the median nervules; often the 

 apical ones only appear, and occasionally these are obsolete. The male 

 of Persius is figured for comparison in fig. 3 of Plate 7, and in fig. 4 

 the upper and lower wing surfaces of the ? are given. Fig. 3 is from 

 a very distinctly marked individual, but is represented with too light a 

 shade upon the terminal half of the anterior wings. 



If. Lucilius would appear to be the common j^isoniades at Scho- 

 harie, as among my collections made several years since at that place, 

 a number of specimens of the species occur, with two or three each 

 of Juvenalis and Icelus, but none of Persius. At Center, where 

 the other species of the genus are abundant, it has not been seen. A 



