336 A New Jumping Spider. [ZOE 
motion. Often, when sitting in the garden, I have had one alight 
on my book, crawl to the top of my uplifted finger or pencil, and fly 
away on its web or make it a bridge to some other and usually 
higher point. The way of getting upon the breeze is in principle the 
same as with all other flyers.. Arrived at the top of an elevation, the 
spider raises the spinnerets and emits a thread, which the wind is al- 
lowed to carry far enough to bear. If this is successful, it flies, but 
if the thread catches, it simply fastens it where it stands, draws it in, 
as it were hand over hand, until taut, and then crawls upon it to the 
other attachment. In most cases the fly-line flows from the posterior 
spinnerets, while from the anterior pair another thread is drawn, and 
fastened to the point upon which the insect stands, so that it has a 
returning line if the flying, at first successful, should afterward end 
in failure. If the fly-line catches, the extra line simply strengthens 
the first end of it, or affords return, should it break. 
It can easily be seen that this way of traveling must be exceedingly 
advantageous to these spiders, not only because of the ease and 
speed which the web bridge allows, in crossing water, desert places, 
patches of grass or clover and other obstructed routes, but also 
because of the much greater speed and safety afforded by actual flight. 
With spiders, as with men, however, the easiest and speediest ways 
are most likely to be disastrous, as is shown in the following instance, 
which illustrates as well the instinctive endowment enabling this 
spider to overcome its natural enemies. 
On a bright morning several years ago a pet lizard lay sunning 
himself on a table in the yard, when a partly grown specimen of this 
spider came sailing along and dropped down directly in front of him, 
For a second or two the spider, unconscious of the great impending 
danger, looked about in the seemingly intelligent way peculiar to 
Attide. The lizard, as yet sluggish and unawakened, was pushed 
toward it.. Instantly the careless attitude of the spider was changed 
for the strategic; facing its enemy, it slowly, almost imperceptibly, 
drew in its legs until it looked more like a tiny chip or the top 
of a polished nail-head than like a spider. The saurian was then 
moved around behind; eneolus, with fixed eyes and cautious move- 
ments, turned to face him still. I put my fingers just behind the 
spider, but it chose to face the greater, and, from the spider stand- 
point, more imminent foe, and kept its eyes on the lizard. After 
testing in various ways without touching it, I now slightly pushed 
