ARGIA. 79 
Antenodal cells on the front wings 4 (80°/, ¢, 92°/, 2), 34 (7% d, 4%» Q), or 3 (13 9/6 3, 4%7o 2); 
on the hind wings 3 (98 °/, 3, 95:5 /, 2), 4 (2%o d), or 2 (45 %/, Q). 
Dimensions.—Abdomen, 3 24-28, 2 24:5-26; hind wing, ¢ 18-20, 9 19-5-20°5 mm. 
Hab. Unirep Srares, Berkeley Springs, Virginia}, Elkhart, Indiana 4 (Weith, coll. 
P.P.C.: 18), Round Mt. (colls. A. NW. S., P. P.C., J. G. Needham: 23,5 2), 
San Antonio (A. W. 8.: 1 2), Carrizo Springs (M. C. Z.: 1 3), and Pecos River? 
in Texas (A. WV. §., no special locality: 16 ¢, 4 2), Phenix, Arizona (coll. Adams: 
1 3 ).—MeExico, Monterey (Rhoads: 2 3,2 9) and Linares (Barrett, coll. P. P. C.: 
1 3) in Nuevo Leon. 
8. Argia pulla., (Tab. IV. figg. 33, 33s, 33s.) 
Argia pulla, Hagen, in Selys, Bull. Acad. Belg. (2) xx. p. 410 (1863) *; Calvert, Proc. Calif. Acad. 
Sci. (3), Zool. i. p. 382, t. 25. fig. 4 (apps. ¢) (1899)?; Kirby, Ann. & Mag. Nat. Hist. (7) 
il, p. 371 (1899) *. 
3. Rear of the head variable in colour, in some specimens black, in others pale predominates. Pale (violet) 
antehumeral stripe varying in width from one-half of to as wide as the black mid-dorsal. Black humeral 
stripe usually wider in its lower part, narrower than or equal in width to the pale antehumeral. 
Segment 2 violet, each side with a longitudinal black stripe, uniting on the mid-dorsal line before the 
apex ; 3-7 black, with a very narrow, pale, transverse, basal ring; 8 and 9 blue, sometimes violet, each 
side with an inferior longitudinal black stripe extending the entire length of the segment, or not reaching 
the base. 
9. Differs from the male as follows :—Segments 3 and 4 with a pale longitudinal mid-dorsal line. Younger 
individuals have no dark markings on 8 and 9. 
3 Q. Pterostigma of the front wings, ‘7 ¢, 6-8 mm. ? long, surmounting less than one cell (534 °/, 3, 
474°/, Q), one cell (433 °/, 5, 483°/, 2), or more than one cell (23 °/, 3, 4°/o 2); of the hind wings, 
8 g, 81mm. 2 long, surmounting one cell (51 °/, 5, 58 °/, 2 ), less than one cell (45 °/, 5, 36°/, 2), 
or more than one cell (4°/, 5, 6°/, 2). 
Antenodal cells on the front wings 3 (91:5 °/, 5, 91%, 2), 4(8°7/o 5, 9%o 2), or 3+ (5°/, 5); on the 
hind wings 3 (93 %/o 3, 93%/o 2), 2+ (47/0 3, 3%/o 2), or 2(3%o 3, 4%. 2). 
Dimensions.—Abdomen, ¢ 23°5-28, 2 24°5-28°5; hind wing, ¢ 17-19, 9 18-21 mm. 
Hab. Mexico, Tepic? (Lisen & Vaslit, coll. P. P. C.: 15 3,8 2), Sierra Madre, 
Tepic (ichardson: 1 3), Presidio de Mazatlan (Forrer: 1 3), Guadalajara (Schu- 
mann: 1 9), Misantla (Godman: 2 3), Vera Crnz (H. H. Smith, Godman: 9 3), 
Atoyac[4 ¢.], Medellin {1 ¢ ], Teapa in Tabasco [45 3, 37 2] (H. H. Smith), Jojutla 
in Morelos [1 ¢], Iguala [2 ¢ ], Rio Cocula [1 2] and Rio de Las Balsas [1 ¢ | 
(Barrett, coll. P. P. C.), and Tepetlapa (H. H. Smith: 2 ¢ ) in Guerrero, ‘Tehuantepec 
(coll. Deam: 1 3), Tolosa (coll. Deam: 1 2); Guatemata, Livingston (H. Wilson, 
M.C.Z.: 16,12); Honpuras, Ruatan I. (Gawmer: 1 3); Nicaragua (U.S. N.M.: 
13,3 2), Chontales (Janson: 3 6); Costa Rica, Caché (Rogers: 2 3); Panama 
(M. C. Z:1 6; coll. Adams: 3 3), Chiriqui (coll, Adams: 2 3), La Chorrera 
(Dolby-Tyler *).— VENEZUELA '. 
This is evidently a very abundant species. Some of the above material is recorded 
