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THE FEATHERFOOT SPIDER, ULOBORUS PLUMIPES. 175 
appeared to have cleared away and pushed back the old broken webs so 
as to make space for new ones, and the fragments occupied the margin of 
the orb space close up to the points at which the foundation lines were 
attached to the adjacent foliage. (See Fig. 161.) On one of these webs I 
counted thirty-six radii and twelve spirals, not including among the latter 
the concentrics which fill up the central space. The hub measured a 
quarter inch in diameter, and the distance between the concentrics was . 
one thirty-second of an inch. Beneath the orb there extended 
ec a mass of retitelarian lines, somewhat after the manner of the 
easure- : : 
ments, Orchard spider, but not so abundant. The central spirals grad- 
ually opened as they approached the true spiral space, and were 
separated by distances ranging from one-eighth to one-fourth inch. <A 
notched ribbon about an inch long was spun on each side of the hub, 
gradually terminating in a point. The central spirals crossed the ribbon 
at the points of its angular scallops. The hub was one-fourth inch wide. 
Snares of Uloborus found upon the banks of Bride’s Run, at the out- 
let of Bride’s Pond, near Niantic, Connecticut, were 
spun in the cavities of old stumps, or upon the ferns 
and grasses near the banks of the stream. The hub 
was checkered or meshed somewhat like the notched 
zone of Epeiroids. The notched or central spirals 
seized the points of the little ribbon that extended 
centrally through the hori zontal orb. The spirals of 
one orb were twenty-two in Fie.162. Pieceof the number, the radii thirty- 
nine and forty. The spirals Scalloped ribbon on continued close up to the 
margin of the notched zone, without any interspace, and 
the web was about four and a half inches in diameter. (See Fig. 160.) 
A striking peculiarity of the orbs of this species is the ribbon decora- 
tions which are quite characteristic, and unite the spinningwork of the 
genus with that of such genera as Argiope and Acrosoma. Per- 
Ribbon haps the most frequent form of decoration is a scalloped band 
Decora- ‘ : : : : 
tee about one thirty-second inch in width, which crosses the central 
part of the orb, being scarcely perceptible at the hub, and grad- 
ually diminishing towards the circumference of the orb. Where the spirals 
cross, this ribboned spinningwork is pulled into points, thus giving the 
band the toothed or scalloped appearance represented at Fig. 162. The 
distance between the spirals was from one-fourth to one-eighth of an inch; 
the distance across the band from point to point about one thirty-second 
of an inch. 
Another form of decoration shows simply the addition on one side of 
the hub of a second ribbon, which makes an angle with the first. In this 
snare the spider hung beneath the hub, with its fore and hind legs re- 
spectively attached to the points where the ribbon joins the hub. 
The most remarkable decorations of this sort I found upon the orbs of 
