Araneides of the United States. 369 
mal, for the following reasons: the eyes are very unequal in 
size, and not placed in the manner described ; the cheliceres 
are large only in the males ; and the length of the feet is not 
the same. It is possible, however, that the insects drawn by 
Abbot belong to this division; for, being very small, probably 
the situation of the eyes may not have been correctly observed. 
Be this as it may, the subgenus Myrmecia, or Myrmecium, is 
closely related to this. : 
I had seen individuals of this species running on the blades 
of grass and stems of weeds, long before I distinguished them 
from ants. "They move with agility and can leap, but their 
habitus is totally different from Arrus. They move by a 
regular progression or regular walk, very different from the 
- halting gait of that subgenus. 
Habitat. North Carolina, Alabama. 
2. SYNEMOSYNA SCORPIONIA. 
Plate XXII. Fig.19. ` 
Description. Piceous ; cephalothorax with two sub-obso- 
lete, pale spots; posterior eyes placed near the base, and re- 
mote from. the rest; abdomen slightly contracted near the 
middle, with a yellowish indented spot ; feet rufous, 4. 1. 2. 3., 
‘st pair very stout; sexes alike, the cheliceres not being en- 
larged in the male. : 
Observations. This small spider is somewhat rare, and 
Was found in the winter months. 
Habitat. North Carolina. 
3. SYNEMOSYNA EPHIPPIATA. 
Plate XXII. Fig. 20. 
Description, Rufous ; cephalothorax wide in the region 
of the eyes, tapering towards the base ; abdomen depressed 
fore the middle, widest beyond the middle, a transverse 
band near the middle, piceous towards the apex ; feet, 
