No.411.] MALES OF SOME TEXAN ECITONS. 165 
At first sight the male of Æ. opactthorax is very similar to the 
male of E. schmitti, but comparison discloses a number of con- 
stant differences. Apart from its distinctly smaller size, the 
thorax and scutellum of the former species are more glabrous and 
therefore appear to be of a deeper black color. The pile is shorter 
on the abdomen and posterior portion of the petiole, the wings 
are distinctly smaller, less blackened, and have paler nervures. 
The junior author has also taken the males of two other 
forms of Eciton at Austin, but hitherto only about the lights in 
the evening. One of these, taken October 29, agrees very 
closely with the description of Æ. (Labidus) harrisi Hald. 
The other, which was flying in considerable numbers August 1, 
is smaller and more reddish, with very pale wings. Professor 
Forel pronounces it to be Æ. Za7ris?, but as the color is not 
that of the type, it must be regarded as a variety. The heads 
of both forms, drawn to the same scale, are represented in 
Fig.2, 2 and Z. Besides the various species already mentioned 
we have recently taken at Austin the workers of E. californi- 
cum Mayr. and E. pilosum F. Sm. The latter species has not 
before been recorded from the United States. With the single 
exception of Æ. carolinense, all the species of Eciton known to 
occur north of Mexico have been found in Texas, and it is very 
probable that Æ. carolinense will be found in the eastern por- 
tion of the state. The species of the genus occurring north 
of Mexico may be tabulated as follows, according as they are 
known from the male or worker phase alone or from both : 
WORKERS. MALES. 
1. Eciton cecum Latr. Labidus sayi Hald. 
2. E. sumichrasti Norton. Unknown. : 
3. E.schmitti Emery. E. schmitti Em. 
4. E. californicum Mayr. Unknown. 
5. E.opacithorax Emery E. opacithorax Em. 
6. E.carolinense Emery. Unknown 
7. Unknown L. harrisi Hald 
8. Unknown L. mexicanum F. Sm 
9. Unknown L. nigrescens Cress. 
to. Unknown. L. minus Cress. 
E. spoliator Forel. 
L. melshemeri Hald. 
Unknown. 
x 
c 
a 
m 
3 
o 
z 
B 
. Unknown. 
. E. pilosum F. Sm. 
— 
i-r 
— 
Qə 
