PERITHEMIS. 317 
Georgia (Morrison, M. C. Z.), with wider and darker transverse bands, and two females from Westville, 
New Jersey (Wenzel, coll. P. P. C.), have almost the same marginal band or trace thereof to be found 
in those from Carrizo Springs. Of the two males from Carrizo Springs, one has brown spots at the distal 
angle of the discoidal triangles, the other has only the merest trace thereof. The female from Babahoyo 
has brown markings much like those of Pl. VI. fig. 18, but the front wings from base to distal spot, the 
hind wings between proximal and distal spots, are deep yellow; the wings of the male have no brown 
spots. Similar to the Babahoyo female, but with the distal band reaching almost across the entire width 
of the wing, is the female from Brazil; and the two females from Westville, New Jersey, above quoted, 
are not very different, except for the marginal band along the posterior edge of the hind wings. The 
great variety in the wing-markings of female tenera has further been illustrated by Howard ®, figg. 4, 6. 
The venation of tenera, in the great majority (58) of specimens which I have been able to examine, is the same 
as that of iris, iii., and of mooma, but some individuals from the United States have the same venation as 
iris, i. (e. g. a male from Sandusky, Ohio), or iris, ii. (Mass., N. Jersey, Penna., Indiana). 
Philadelphia Carrizo Springs. Matamoros. Babahoyo. Brazil. 
(vicinity). 
Abdomen, gd ......-- 14-15 13°5-14 .. 13 .. mm. 
0 Qe eee 13-14 12-13 12 13°5 14 ,, 
Hind wing, d ......-: 18-20 17 17 Leo 
a rr 18-21 17-17°5 17 19 20 ,, 
Hab. Unirep States, Massachusetts 18 19 21 34, Michigan *, and North Dakota 
(R. Osburn, in litt., 24.11.1902) to Georgia 2°, Tennessee 1, and Texas ?*.—MuExico, 
Matamoros? (M. C. Z: 19), Atlihuacan (Saussure 19),— EcuaDor, Babahoyo 
(Campos R., A. N. S.: 164,19); Brag (M. C. Z. ex coll. Winthem: 1 2). 
The difference between forms fenera and mooma is in the wing-bands of the female 
as stated on pages 310-11. An individual which appears to connect these two forms is a 
female from Dallas, Texas (Boll, M. C. Z.), in which the proximal and distal bands are 
united by a brown area between the principal and median sectors on the hind wings, 
and almost but not actually united on the front pair. Cf. also the female from the 
Isthmus of Tehuantepec described under mooma on page 319. 
Transitions between forms tenera and intensa have been described on page 312. 
Of somewhat uncertain position are two males and a female from El Rancho, 
Guatemala (Wlimsn., coll. ejusd.). They have the venation of iris, ii.; the female 
has the costal and subcostal spaces, a branch reaching from the latter down into the 
discoidal triangle, and a transverse band from nodus to stigma for the entire width of 
the wings, deep yellow. Very similar, but with the ultra-nodal band not reaching out 
to the stigma, are two females from Bahia, Brazil, which Hagen had named cloe *, but 
not described, and a female from Cordova, Argentina, in the M. C. Z.; also the two 
females from San Isidro, Argentina, described by Dr. Ris t in the paragraph beginning 
April 19 (Laurent, Am. Ent. Soc: 1 9) and May 26(M. C. Z.: 1 Q), in Florida (A. W.S.: 4 2). The 
males from the same localities and collectors have strongly marked dark spots on the distal angle of the 
discoidal triangles, and a dark streak in the subcostal space of the hind wings reaching halfway to, or to, 
the first antecubital. 
* Of, Syn. Neur. N. Am. p. 320 (1861). 
+ Hamburg. Magalh. Sammelr., Odon. p. 31 (1904). 
BIOL. CENTR.-AMER., Neuropt., February 1907. of 
