ARGIA. 99 
d. Rear of head pale (blue), Pale (blue) antchumeral stripe nearly equal in width to the black mid-dorsal. 
Humeral stripe forked above, in its lower half one-half to one-third as wide as the pale antehumeral. 
Segment 2 blue, each side with a basal streak and an apical spot black, the streak absent in some 
specimens and united with the spot in others; 3-6 blue, apical fourth black; 7 black, a transverse 
basal ring, and, in some, also a mid-dorsal, longitudinal, basal stripe, blue; 8 and 9 blue, unspotted 
or with a black, usually apical, spot each side. 
9. Differs from the male as follows:—Pale lilac often replacing blue of male. Pale antehumeral stripe 
varying from equal to twice the width of the black mid-dorsal ; segments 3-6, in addition, with a black 
postbasal streak each side, which may be united with the apical black on one or more of these segments ; 
8 and 9 with a basal black stripe on each side of dorsum. 
3 Q. Pterostigma of the front wings ‘8--9 mm. long, surmounting less than one cell (64 °/, ¢, 35/5 2), one 
cell (33 °/, 3, 63°/, 2), or more than one cell (3°/, 3, 2 °/, @); of the hind wings ‘9-1 mm. long, sur- 
mounting less than one cell (50 °/, 3, 30 %/,@ ), one cell (47 °/, 3, 70 °/, 2), or more than one (3 lod). 
Antenodal cells on the front wings 4 (§2°/, ¢, 90°6°/, 2), 3 (15°, 3d, 63°, 2), 3+ (1%, 6,2 °/, 2), 
5(1°/, 5 2), or 2 (1%, S)3 on the hind wings 3 (91:5 °/, 3, 91°6°/, 2), 4 (75%, 3b, 83 °lo 2), or 
2(1% 3). 
Dimensions.—Abdomen, 3$ 23-27, 9 23-25; hind wing, ¢ 17°5-20-5, 2 19-20:5 mm. 
Hab. Unirep Srarss, Palo Alto (Kellogg), Ramona and San Felipe Valley (coll. Elrod), 
San Bernardino (Zruman, coll. P. P.C.: 1 8) and Los Angeles, California (Davidson, 
coll. P.P.C.: 18,22), Tucson, Arizona (coll. Adams: 7 3,5 2), Round Mt., Texas 
(colls. Needham, P. P.C.: 33 3, 35 2); Lowzr Catirornia, Lower Purisima! (Haines, 
coll. P,P. C.: 4 3,1 2), Comondu!, El Rosario!, Mesa Verde!, Sierra El Taste !, 
Miraflores!, and San José del Cabo! (Hisen, coll. P. P.C.: 4 3, 6 2).—MeExico, 
Monterey, Nuevo Leon (Rhoads: 1 3). 
Taken in Texas from March to October. 
My previous description of the appendages of A. agrioides, 3, is inaccurate: the 
small acute tooth on the inner margin before the apex may represent the inner branch 
of a typically bifid apex; on the basal side of this small tooth the inner margin shows 
a well-marked convexity or lobe, not indicated in my figure (fig, 14, t. 15) of 1895. 
Var, nahuana, var. n. (Tab. IV. fig. 62 ss.) 
¢. Rear of the head pale. Pale (blue) antehumeral stripe from one-half to three-fifths as wide as the black 
mid-dorsal. Humeral stripe forked above, at its middle from one-half to equally as wide as the pale 
antehumeral. Segment 2 blue, each side with a black band, widened at its hinder end, which does not 
reach the apex, or this band represented only by an anteapical black spot; 3-6 blue, apical third black, 
which is prolonged along the ventral margin of each segment almost to base; 7 black, with a transverse 
basal ring and a mid-dorsal stripe in the basal two-thirds blue, or in some specimens almost entirely 
black ; 8 and 9 blue, each side with a broad black band from base to apex; in teneral males each of 
these bands is divided into two longitudinal ones, which fuse with increasing age. 
©. Differs from the male as follows :—Pale brown usually replacing the blue of the male. Pale antehumeral 
stripe from three-fourths to equally as wide as the black mid-dorsal. Segments 3-6 similar to those of 
the male, but with the apical black of the right and left sides of 3 and 4 not always meeting on the 
dorsum ; on each side of 3-6, below the larger area of apical black, is a small separate black streak 
representing the forward prolongation in the male, in addition to which on each side is a short, superior, 
postbasal, black streak (not represented in the male), which is usually isolated, but in some specimens 
"Gg united with the apical black; 8 and 9 each side with a superior black stripe as long as the segments 
and‘an inferior, black, apical streak (sometimes absent on 9); these stripes on 8 and 9 are sometimes so 
_ Wide-ads to occupy almost the entire area. 
02 
