PERITHEMIS. 315 
Front wings with two post-triangular rows increasing to three rows near the level of the nodus and so 
continuing to, or almost to, the wing-margin, internal triangle free. 
Some of the males from San Lorenzo show feebly-marked brown spots at the distal angle of the discoidal 
triangles, others from the same locality none at all. Altamira males have such a spot, the nodus 
narrowly bordered with blackish, and a blackish streak in the subcostal space of the hind wings as far as 
the first antecubital. 
Our figures show a wide range of variation in wing-markings of the females from one and the same locality, 
but still other modifications are presented by other specimens of the same sex. The Louisiana female 
has the bands as much fused as shown in Tab. VI. fig. 27, but paler and more reddish, with no connection 
between the wing-bases and the fused bands, and the costal spaces almost colourless from base to nodus. 
One female from San Lorenzo has the wings approximately as in fig. 22, the other and larger has the 
bands and their connections with each other and with the wing-base deep yellow, with no brown, 
the distal band reaching across the entire width of the wings and from the level of the penultimate 
antecubital (front wing) or nodus (hind wing) to the stigma. The female from the Isthmus of Tehuantepec 
has the bands reddish-brown, of nearly the size shown in fig, 22, but hardly connected with each other 
or with the bases of the wings. The markings of the wings of the Morales female correspond very 
closely with those of the type’’, in that the “curved and pointed” second, or nodal, band reaches back 
only as far as the lower sector of the arculus (short sector); a further shortening of the bands would 
result in the markings being confined to the anterior margin of the wing as in iris, and for which tho 
Amatitlan female specially mentioned under iris, iii., forms a connecting-link. One female from Rio 
Grande do Sul has the bands yellow, the brown in them reduced to still smaller spots than in fig. 19; 
another has the bands dark reddish-brown, but the connection between them is a streak confined to the 
subcostal space, which also furnishes the only connection of the proximal (or triangle) band with the base ; 
in the third female the connections of the bands with each other and with the base are wider, the pattern 
thus formed being very similar to that of fig. 22, although the colours are of a paler, more reddish-brown. 
These three females are a little larger (see below) than those from Mexico and Central America, which 
is not the case with those from Corrientes and Sapucay ; these last two offer another peculiarity in that, 
with a wing-pattern approximating fig. 22 (but in paler, reddish-brown), there is no connection between 
the proximal (or triangle) band and the base. 
Dimensions (in mm.) :— 
Altamira. San Lorenzo. Panzos. R. G. do Sul. Corrientes. Sapucay. 
Abdomen, d .... 145 12-13 wees eae sees 145 
* se) 12°5-14°5 13°5-15 11°5-12°5 14-14°5 12:5 13 
Hind wing, ¢. 17:5-19 16 cea see wee 18 
oon Qe eee 17-19 18-19 16°5-18 19-21 18 18 
Hab. Unirev States, Louisiana [Schaum: 1 2 |.—Mexico [Sallé: 1 2 with label 
«7. tenuicincta, 2, var.,” in Selys’s hand] (M. C. Z.), Altamira in Tamaulipas [3 ¢, 
11 2], San Luis Potosi [1 ¢ ] (Hoag, colls. A. N. S., P. P.C.), Camaron (1 ¢ ), Atoyac 
(H. Hi. Smith: 1 3), Tlacotalpam (Barrett, coll. P. P.C.: 1 2), San Lorenzo Cordova 
(Trujillo: 5 ¢,2 2), Isthmus of Tehuantepec (Swmichrast, M. C. Z.: 1 2); Guatz- 
maLA, Panzos in Vera Paz (Champion: 3 2), Livingston (Wilson, M.C. Z.: 1 3), 
Morales (iine, O. S. U.: 1 2), Gualan (Deam, Wilmsn., coll. Wlimsn.: 3 3).— 
VENEZUELA, La Guayra (Lyon & Robinson, U. S. N. M.: 13); Braau (Mrs. Munroe 
& coll. Charp., M. C. Z.: 148,12), Rio Grande do Sul (v. Jhering, A. N.S.: 12, 
39); Paraguay, Sapucay (Poster, U. S. N. M.: 136,12); ARceEntina, Corrientes 
(Perren, coll. P. P. C. ex coll. McLachlan: 1 2); Wesr Inpixs, Jamaica 1’, 
Taken in January (Gualan), March (Morales, Sapucay 2), May (Atoyac), June 
