r 54 
The Ohio Naturalist. 
[Vol. X, No. 7, 
while of 16 wings of monomelaena examined only a single wing 
has 2 crossveins, all the others having but 1 . Also, 6 wings of 
fasciata have 4 posttrigonal cells, and 2 wings have 5. On the 
other hand 9 wings of monomelaena have but 3 cells, although 
7 wings have 4. 
3. Kirby’s figure shows the first row of cells, proximal to the 
postanal cell, between A and posterior margin of wing in front 
wing as 3 cells wide. In the Louisiana specimens this is true 
for 7 wings, while 1 wing has 2 cells; in 16 wings of monomelaena 
examined these are invariably 2 cells. (Kirby figures the post- 
anal as a single cell. This is undoubtedly an error. My material 
shows it 2 or 3 celled.) 
4. Kirby mentions the enclosed basal pale area in the hind 
wing as being yellowish or yellow, though his figure does not 
show this. The accompanying half tones show this character 
clearly in the Louisiana specimens. It is entirely lacking in 
monomelaena, whence the specific name. 
5. In fasciata as described and figured the colored area just 
proximal and posterior to the nodus in the front wing extends 
posteriorly across Cu r This is true of all the Louisiana speci- 
mens. In monomelaena on the other hand this dark area in its 
maximum development is limited posteriorly by the median 
supplement. 
So much for the identification of fasciata. Other characters 
point to the specific distinctness of monomelaena and fasciata, 
though unfortunately I am unable to find such characters else- 
where than in the wings. Two venational characters are of 
interest: the number of cells between A, and A 3 in the hind wing 
and the number of cells on the posterior margin of the hind 
wing from the base of the wing to the anal loop. In both of these 
characters fasciata has a greater number of cells than monomel- 
aena, and in both species in the case of the first character the 
female has more cells than the male, while in the second charac- 
ter the male has more cells than the female. These characters 
may be tabulated: 
Number of cells between A 2 and M 3 in hind wing: 
fasciata male, one wing 11, two 12, one 14; average 12.25. 
female, three wings 15, one 17; average 15.5. 
monomelaena male, three wings 9, two 10; average 9.4. 
female, two wings 9, four 10, two 11, one 12, 
one 13; average 10.5. 
Number of cells on posterior margin of hind wing from the base 
of the wing to the anal loop: 
fasciata male, one wing 32, two 34, one 35; average 33.75. 
female, two wings 31, two 33; average 32. 
