ARGIA. 47 
black, with a pale (blue or yellow) transverse basal ring, which may be interrupted on 3 or 4, and a pale 
inferior stripe on either side; 8 black, with a pale (blue or yellow) transverse basal ring, and in some 
specimens a short, basal, longitudinal streak on each side; 9 with the basal half to fourth blue, remainder 
black, whose anterior margin is deeply sinuate ; rarely the apical black on 9 is reduced to a stripe on either 
side of-the dorsum im its apical half. 
2. Differs from the male as follows :—Occasionally the rear of the head is chiefly pale. Pale antehumeral 
stripe from one-fifth to three-fifths as wide as the black mid-dorsal. Humeral stripe as in younger males. 
Pale mid-dorsal stripe on segment 2 as in younger males, varying in length from one-half of to as 
long as the segment, or divided into a basal stripe and an apical spot ; 3-7 as in the male, but also 
with a pale mid-dorsal longitudinal stripe (which may or may not be confluent with the basal ring) and 
the lateral stripes wider ; 8 and 9 pale (greenish), each side with a superior and an inferior black stripe 
as long as the segments, or not quite reaching the apex on 9: these stripes sometimes so wide as to 
almost obliterate the pale colours. . 
3 Q. Pterostigma of the front wings ‘9-1 mm. ¢ @ long, surmounting one cell (45 9/, 5, 49°3 °/o 2 ), more 
than one cell (41°/, gd, 42°3 °/, 2), or less than one cell (14 9/5 5,83 %/o 2); of the hind wings 1- 
1:2 mm. long, surmounting more than one cell (48 °/, ¢, 59°) o/, 9), one cell (47 9/, bd, 36°95 lo 2), OF 
less (5 9/4 5, 4 %o 2). 
Antenodal cells on the front wings 5 (81:25 °/, 3, 79°5°/o 2), 4(14%o o 16°5°/, 9), 4+ (3°25 lg S)s 
or 6 (15%) 5,4 %/o @); on the hind wings 4 (945 °/, 3, 96 0/1, Q), B(55%J, 5), 5 (26 %o P), oF 
3+ (13°, 2). 
Dimensions.—Abdomen, ¢ 27-33, 2 26-29°5; hind wing, ¢ 18°5-23, 2 20°5-23°5 mm. 
Hab. Untrep States, White Lake, Sullivan Co., New York (P. P. Calvert: 10 3, 
3 2, 8 pairs in copuld), Newfoundland in New Jersey? (Davis, coll. P. P.C.: 28), 
Washington, D.C. (J. 8. Hine, coll. P. P.C.: 16,1 2), Jemmys Creek, Marion Co., 
Arkansas (coll. C. C. Adams: 1 3, 2 2), Waco (M.C.Z.: 6 ¢,6 2,1 pair in copula), 
Round Mt. (colls. A. W.S., P. P.C.: 76,6 @), and San Antonio (A.V. S.: 2d, 
1 ¢), Texas.—Mexico, Monterey, Nuevo Leon (Rhoads: 15 3,6 2 ), Atoyac (Smith, 
Schumann: 10 3,6 @) and San Lorenzo, Cordova (Trujillo: 4 ¢, 2 2)in Vera Cruz, 
‘Teapa in Tabasco (H. H. Smith: 2 ?); Britis Honpuras (Blancaneauz: 46,1 2); 
Guatemata, Livingston (7. Wilson, M. C. Z.: 26,19); Panama (M.C.Z.: 1). 
—Venuzueta (M. C. Z.: 5 3,2 2), Puerto Cabello *. 
6. Argia tezpi, sp.n. (Tab. IV. figg. 19, 31, 31s.) 
Argia cuprea, Calvert, Proc, Calif. Acad. Sei. (2) iv. p. 479, t. 15. fig. 12 (apps. ¢) (1895) °. 
¢. Rear of the head black, pale below the postocular spots and along the eye-margins. Pale antehumeral 
stripe one-tenth to one-twelfth as wide as the dark metallic violet (or dark metallic green or almost black 
in dried specimens) mid-dorsal stripe. Humeral stripe four to five times as wide as the pale antehumeral 
and sometimes enclosing a small pale spot at its upper end. Segment 2 black ; 3-7 black (often with metallic 
green reflection), with a pale, narrow, transverse, basal ring; 8 black; 9 black on sides inferiorly and 
on basal two-thirds of dorsum, apical dorsal third pale, having its anterior margin deeply sinuate ; the 
basal dorsal black may be reduced to a pair of basal stripes or isolated spots, or the apical pale area may 
be reduced to a pair of small spots. 
Q. Differs from the male as follows :—-Pale antehumeral stripes one-fourth to one-half as wide as the black 
mid-dorsal stripe. Humeral stripe divided lengthwise into two unequal stripes in its upper half (forked), 
its lower half equal to, or twice as wide as, the pale antehumeral. Segment 2 pale, each side with a 
superior longitudinal stripe as long as the segment, and a shorter inferior streak, black; 3-7 as in the 
male, but 3-6 with a pale, mid-dorsal, longitudinal line, the sides yellowish with a narrow, inferior, 
longitudinal, brown stripe as long as the segments; 8 and 9 pale green or blue, each side with an inferior 
brown stripe as long as each segment anda superior blackish stripe from the base to two-thirds or one-half 
