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302 AMERICAN SPIDERS AND THEIR SPINNINGWORK. 
large Epeira insularis, whose nest I had opened by breaking the threads 
near the lower margin. The inmate reached her claws over the upper 
edge of the leaf, pulled it downward toward the lower edge, and, while 
holding the two edges together, elevated the spinnerets, and threw out a 
ray of threads, which immediately adhered to and cemented them together. 
The process is not really a “sewing,” as it is popularly called, at least in 
the sense that the leaf is perforated and the thread drawn through the 
holes. That word, however, is the best that we have, and, perhaps, suffi- 
ciently characterizes this behavior. 
The fastenings are evidently made in part, at times, from without, as 
the threads show application to the outer surface of the leaf. This spin- 
ningwork is well shown at Figs. 254 and 255, in which cases the 
spider has crawled over the outside of the leaves, swinging her 
abdomen alternately from one side to the other, touching the 
spinners to the surface at each movement. Again, the nest presents the ap- 
pearance of having been sewed from within in the same manner. In such 
eases the spider evidently applies the liquid silk to the tangent or ap- 
proached edges of the leaf, which, when released from the pressure of the 
spider’s claw, spring back and stretch out the thread, leaving an open seam 
across which the lines run. Sometimes this seam is subsequently entirely 
closed. The character of the sewing of this and other Orbweavers is shown 
at Fig. 255, into which the threads haye been drawn very accurately from 
the natural specimen. The sewing habit obtains among the nest makers of 
all tribes, and the mechanical methods are in all quite identical with those 
of the Orbweavers as above described. 
Passing now from the spiders whose snares are full orbed, we find the 
nest making habit existing, with some modifications, among the smaller 
group that weave a sectoral orb, Of these the most numerously 
Zilla: represented in species is the genus Zilla; her nest is sometimes 
Nest of : 5 
oui. simply a rude den of netted lines, so arranged as to leave a 
concavity in the centre of the mass sufficient to shelter the spi- 
der. The young Zillas quite invariably weaye such a shelter tent when 
they first set up housekeeping. (See Fig. 133, Chapter VIII.) 
Among the adults of the genus the dome shaped silken tent, such as 
has already been described (Fig. 261), is very common. This tent is swung 
in various positions, according to the location of the spider, and 
may or may not have a screen of tented leaves. At other times, 
as I have often seen with Zilla x-notata, in New England, the 
shelter is spun underneath leaves, and occasionally the leaves are used as 
a protection, without a very decided woven tent. On the whole, my obser- 
vations of the habit of Zilla show that it is not strongly inclined to avail 
itself of the protection of leaves in the manner of Epeira trifolium and 
others of that group. However, it occupies its home, and uses its trap- 
line in the manner of the nest making Epeiroids. 
Mode of 
Sewing. 
Domed 
Tent. 
