78 
Psyche 
[September 
pare the female of the new subspecies directly with that of 
carolinense, but the excellent figure of the female of that 
species presented in Dr. Wheeler’s publication of 1921 per- 
mits me to note the following differences: the sides of the 
head of carolinense are more convex, the occiput only feebly 
impressed, the epinotum in profile much more angular and 
no higher than the adjacent portion of the mesonotum. 
It seems worth while to note in passing that the figure of 
the female of Acamatus schmitti given by Emery in the 
Genera Insectorum is incorrect in regard to the length of 
the legs. In Emery’s figure the hind femora are as long as 
the greatest width of the thorax with the rest of the ap- 
pendage proportionally shortened. The impression pro- 
duced is one of a relatively short-legged insect, whereas, 
actually the legs of the females of Acamatus bear about the 
same proportion to the head and thorax as do those of the 
worker. Measurements of a female of schmitti in my col- 
lection show that the hind femora are one and one-quarter 
times longer than the greatest width of the thorax with the 
rest of the appendage uniformly longer, especially the tar- 
sal joints which are almost twice as long as those in Emery’s 
figure. 
Literature 
Wheeler, W. M. and Long, W. H. 
1901. The Males of Some Texas Ecitons. American Natur., 
Vol. 35, pp. 157-173. 
Wheeler, W. M. 
1921. Observations on Army Ants in British Guiana. Proc. 
American Acad. Arts and Sci., Vol. 56, No. 8, pp. 291-328. 
Wheeler, W. M. 
1925. The Finding of the Queen of the Army Ant, Eciton 
hamatum Fabricius. Biol. Bull., Vol. 49, No. 3, pp. 139-149. 
