254 NEUROPTERA. 
The seasonal occurrence is likewise extensive. Individuals taken in January are 
from Teapa, Belize, Guatemala, Guayaquil, Gurupd 1’, Santarem 1’, Cachoeira, Rio de 
Janeiro, Sapucay, Jamaica, Hayti, and Porto Rico. July is represented by examples 
from Texas, the Gulf Coast of Mexico, Colon, Bonda, and Cuba’. Mexican specimens, 
from one or another locality, are dated from every month. 
Next to Orthemis ferruginea, this is the most familiar Tropical-American Libelluline. 
Compared with that species (anted, pp. 235-6), its horizontal distribution is nearly as 
great, but it does not appear to extend so far north along the west coast of Mexico, 
nor into Lower California and the adjacent part of the United States; along these 
Pacific slopes its place is largely taken by Erythrodiplax funerea. The vertical 
distribution of wmbrata is less than that of O. ferruginea, as the highest elevations it 
attains in Mexico and Central America appear to be Orizaba (4000 ft.=1200 metres) 
and San Ger6nimo, Guat. (3000 ft.=900 m.). 
Hagen is apparently the only other writer who has mentioned the homceochromatic 
females. In 1868 he speaks? of them as “‘dusserst selten,’ and implies that he had 
seen but four “unter vielen tausenden von Stiicken.” Comparing this statement with 
one seven years later 8, it would seem that all these four were from Cuba. It is 
therefore interesting to note the numbers of the males and both forms of females in 
the present material :-— 
3d. Heterochromatic 2 Q. Homeeochromatic 2 2. 
Georgia and Florida .... 2 5 0 
Texas .......0...000ee 6 3 4 
Mexico .............. 53 47 13 
British Honduras ...... 6 3 1 
Guatemala ............ 32 17 6 
Costa Rica ............ 0 0 2 
South America ........ 62 44 0 
Bahamas .............. 3 0 1 
West Indios.....g..... 28 23 0 
No donbt these figures represent a certain amount of selection, conscious or 
unconscious, on the part of collectors and others through whose hands these specimens 
have passed. The figures therefore cannot be considered to represent the actual 
proportions in which the sexes and forms occur in nature. They do seem to indicate, 
however, taken in conjunction with Hagen’s statements, that in the northern part of 
its range (Texas, ‘Mexico, Central America, Bahamas, Cuba) wmbrata tends far more 
to two forms of females than in South America, from which continent not a single 
homeeochromatic female has yet been recorded. This is the only difference which 
I have been able to find by comparing specimens of wmbrata from different localities 
with each other. 
