372 SUPPLEMENT. 
From these two corrections it follows that cuprawrea females are like cuprea females, and I am not able to 
find any character to separate them. 
To the localities given, add :—Costa Rica, Surubres (Biolley, coll. Kahl: 173,62). 
Prof. Biolley noted of this species and of A. e@nea at the same locality, ‘‘ yeux 
rouges.” 
Argia @nea (p. 85). 
Q. The dark humeral stripe varies as follows :—29 Guatemalan examples and those from Chavarillo cited on 
p. 86, anted, have the humeral stripe proper represented only by a black line on the upper part of the 
humeral suture unconnected with the black mesepimeral stripe, which latter reaches upward not quite to 
the superior mesopleural margin nor fuses with a short black line which lies on the site of the upper 
end of the obsolete first lateral thoracic suture. In the Chavarillo females the black mesepimeral stripe 
is narrower (‘3 mm. in width) than in most of the Guatemalan specimens (‘5-6 mm.). 
A fusion of the black mesepimeral stripe with this short black line may almost (Gualan, 1 9) or actually 
(Mazatenango, 1 2 in cop.), exist without a fusion between the mesepimeral stripe and the humeral line, 
or the black mesepimeral may be united with both the humeral line and the black line of the obsolete 
first lateral suture (Gualan 2 9, Lower California 3 9, and Tierra Colorada 1 9, cited anted, page 86). 
This last condition is that which was described on p. 86 as ‘ humeral stripe deeply forked for its upper 
two-thirds,” &c. 
To the localities given, add:—Mexico, Victoria (Rhoads, A. N. S.: 36) in 
Tamaulipas, Guadalajara (McClendon, U. S. N. M.: 1 3); Guaremata, Gualan 
[47 ¢,11 9 +8 pairs], Zacapa [2 3, 4 2], between Gualan and El Rancho [1 ¢, 
2 2], between El Rancho and Sanarate [6 g,2 2], Sanarate [3 g, 6 @ ], between 
Agua Caliente and Guatemala City [1 ¢], Escuintla [3 ¢, 2 2 +1 pair], Santa 
Lucia [1 ¢ |, Mazatenango [5 ¢,1 9 +1 pair]; Honpuras, San Pedro Sula [1 ¢ ] 
(Williamsons, Deams, Miller, Hine, colls. Wilmsn., O. S. U.); Nicaragua, Chinandega 
(Baker, coll. P. P. C.: 1 3); Costa Rica, Esparta [17 ¢, 9 2 ], Surubres [4 ¢,1 2] 
(Biolley, coll. Kahl). 
Mr. Williamson made the following notes on this species :—“ Gualan, Jan. 13, 1905. 
About ripples, usually on rocks, rarely high above water excepting towards evening, 
when it may be found on bare twigs among underbrush near the river. At Gualan 
this species occurs rarely along the largest and smallest streams, frequenting the 
medium-sized.”—‘ Gualan, Jan. 22. In evening toward sundown leaves stream and 
goes back into vegetation. Found then on twigs and bare stems usually dead.”— 
‘San Pedro Sula, Feb. 28,1905. At mouth of gulch. Only one seen in Honduras.” 
Prof. Biolley’s specimens are noted as from “ Bord de la riviére Surubres” and 
““ Ksparta, bord fangeux du ruisseau Chingo,” 
Argia harknessi (p. 87). 
Q. The superior black stripe on segment 9 is two-thirds as long as that segment in the only (type) example 
known. 
