MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 79 



A. do//ii SY>. nov. Another species in the Brooklyn nmscum, from Mexico, is a little lurger 

 than ^1. /loffi'i; the body and wings are uniformly reddish brown as in Anisotasftf/ma, with a lilac 

 tinge, and with uo stripes. The basal line is very indistinct; the extradiscal line regularly 

 curved and ending on tli(> apex. The discal spot is minute, white. Beneath there is no discal 

 spot: there is a faint extradiscal line common to l)oth wings. It seems to have been undescribed. 



^DP^LOCEPHAIL,^ ISIAS Boisduval. 



(Plate XXXIII, tig. 1, S and 9.) 



Adelocephala isias Boisdi'Val, Annales Soc. Ent. Belgique, XV, \>. i'-. 1S72; Kirby, 8yii. Cat. Lep. Het., I, p. 742, 

 1892. 



Imago. — 1 S , 9 ■ This species has been found l)y Mr. Jacob Doll at Brownsville, Tex., and 

 identified by Doctor Dyar. It is so closely allied to A. hogeu that that species will probably be 

 united with it, since the only important difference is the greater number of pairs of pectinations 

 to the male antenna\ The male genital armature should be examined to test the specific distinct- 

 ness of A. hoge! from this species. 



The front of the head in the 9 comes to a point, the front l)eing decidedly triangular, nar- 

 rowing rapidly toward the labrum; in the male the front is wider at the labial region, and the 

 thickened projection of the ch'peus is visible. 



Male antenna? with 21 pairs of pectinations, the simple tip consisting of about 20 joints, 

 while in four ^ c? of ^. hogei there are only IS pairs of pectinations, the filiform extremity being 

 18-jointed. 



It is very near ^1. hvgei S in the shape and color of the head, thorax, and abdomen, in the 

 shape of the wings; the presence of two white di.scal spots, and the style of coloration, the chief 

 difference being the pearl-gray tint of the fore legs, and the duller ocherous groiuid color of the 

 wings. 



21ale. — Head and liody ocherous, but not of .so bright a tint as in .1. hijge'i. Fore wings of 

 the same shape, costa and outer edge the same, but the outer angle is more angular, less rounded, 

 than in .1. laigei. while the ground color of the fore wings is more gray ocherous; the base of 

 the wings and their outer edge are washed with pearl gray rather than pink. The two cross lines 

 the .same in direction and width, but instead of being distinct and dark reddish as in ^4. Iiwjei, 

 they are somewhat indistinct and inclined to be dark brown. The two separate white discal spots 

 of ^1. hiigei are in ^1. /.y/rt.y represented by two nuich larger white spots which are very nearly 

 connected (at first sight they appear to be so); the larger spot is irregularly rhomboidal or 

 diamond-shaped, twice as long- as wide, pointed at each end. and very slightly separated from the 

 one in front, which is about one-quarter as wide as the other, and pointed at the outer end. (In 

 four A. hogei i , the two spots are small and usually separated, but in one example they are 

 confluent.) 



Hind wings as in A. hijgei, except that they are paler, duller in hue, but the roseate patch 

 is the same. Beneath, body and wings of a decidedly duller, more graj^ish hue than above, but 

 identical in tint with some of the ^l. hogei; the fore wings are the same as in the other species. 

 The large black round discal spot is centered with whitish or pearl-gray scales exactly as in A. 

 hogei, the latter varying a little. The fore legs differ from those of A. hogei, which are pink, in 

 being grayish pearl. 



All the slight difference from ,1. hiigei we have pointed out we believe to he varietal, except 

 that of the antennse. Its specific distinction or identity maj* be settled hereafter by an exami- 

 nation of the genital armature. From Boisduval's description of his S the two white discal 

 "points" appear to l)e like those of A. hiigei. 



Female. — The antenna? are simple, with no vestiges of the male pectinations; slightly ciliated 

 on the distal half. In markings and shape of the wings very different from the S ; fore wings 

 with no white distal spots, but instead is a large round dusky brown spot, while the ground color 

 Vol. 9—0.5 6 



