366 SUPPLEMENT. 
del Norte, Los Amates [2 pairs + 22 ¢, 6 ¢ |, Gualan [S$ ¢ |; Honpvuras, San Pedro 
Sula [one pair + 41 3,9 2] (Williamsons, Deam, Hine, colls. Wiimsn., O. 8. U.); 
Nicaracua (U. 8. N. M.: 12); Cosra Rica, Surubres (Biolley, coll. Kahl: 1 2 |, 
Rio Machuca (Biolley, colis. A. N. S., Wilmsn.), Caché as before, Juan Vinas (Cary, 
U. S.N. M.: 1 8); Panama, Colon (Howland, coll. Needham: 1 ¢ ). | 
Following are some observations by Mr. Williamson on this species :-—‘* Tos Amates. 
In rank vegetation along stream below Los Amates. Jan. 17, 1905, same situation as 
Anomalagrion hastatum.” ‘San Pedro, Feb. 28, 1905. At mouth of gulch.” 
It will be observed that freguentula and pulla occur in the same localities (Teapa, 
Livingston, Los Amates, Gualan, San Pedro Sula, Surubres) and even on the same day 
(e. g. Feb. 28, 1905, by E. B. Williamson ; Jan. 19 and 20, 1907, by L. A. Williamson ; 
both at San Pedro Sula). 
I am not able to certainly distinguish between the females of frequentula and 
johannella, unless the following character suffices: in the former the costal and distal 
sides of the pterostigma are subequal, while the latter has the costal side distinctly 
longer than the distal. 
Argia ulmeca (p. 80). 
g. The example from San Pedro Sula has the upper end of the well-developed black humeral stripe fused 
with that of the mid-dorsal ; abdomen 31, hind wing 22°5 mm. 
Those from the Pacific slope of Guatemala show some departure from the type in having: (a) the black 
humeral stripe reduced to a very narrow stripe or even a line, which in at least two examples is present. 
only on the upper end of the humeral suture ; (0) a black line at the upper end only of the second lateral 
thoracic stripe, instead of on the entire length thereof as many—but not all—of the original material 
possess ; (c) often, but not always, no prolongation of the basal blue ring on abdominal segment 4 to form 
a short mid-dorsal stripe; (d) smaller size, see below. In a considerable proportion, but not in all, the upper 
ends of black humeral and mid-dorsal thoracic stripes are fused, in some only on one side of the thorax. 
@. The females from the same part of Guatemala also show these departures from the type, as (a) the 
black humeral stripe in some entirely absent, except for an inferior mesepimeral spot, but transitions to 
the type are afforded as by the presence of a black line on the humeral suture unconnected with the 
mesepimeral spot, by the presence of a black line on the upper part of the suture and a black mesepimeral 
line unconnected with each other, and by the existence of a narrow stripe on the whole length of the 
humeral suture widening below into the inferior mesepimeral black spot; (6) as in 3 3 (¢) in some no 
prolongation of the basal blue ring on 4; (¢) asin ¢. 
3 9. Twenty males (Mazatenango 8, 8S. Lucia 6, Escuintla 6) and seven females cited below give the 
following statistics and dimensions :—Pterostigma, front wings, surmounting more than one cell 
(97°5 °/, g, 100 °/, 2) or one cell (2:5 °/, 3); of the hind wings surmounting more than one cell 
(100%), ¢ 2). 
Antenodal cells on the front wings 4 (87°5 °/) do, 715 %7/o 2), 5 (25% db, 143%, 2), 3+ (5%, d, 
7p 2), 44+ (7 %o @), or 3 (5%, 5); on the hind wings 4 (72° Jo db, B5°7 Yo 2), 8 (25 %Jo S; 
64:3 °/o 9), or B+ (25%, ¢). Abdomen, ¢ 26:5-30, 2 26-28°5; hind wing, g 19-22, @ 21-23 mm. 
To the localities given, add:—Mexico, Jalapa (Calvert, coll. P. P. C.: 18); 
GuaremaLa, Mazatenango (Maxon & Hay, U.S. N.M.: 4 6,1 2)(28 6,22 +. 
1 pair], Santa Lucia [24 g,1 2 +1 pair], Escuintla [10 ¢,1 2] (Williamson, Hine, 
colls. Wilmsn., O. S. U.); Honpuras, San Pedro Sula (Wilmsn., coll. gusd.: 1 ¢ ). 
