a 
136 AMERICAN SPIDERS AND THEIR SPINNINGWORK, 
habits existing side by side in the Lineweayers and an Orbweayer which 
affects a lineweaying spinningwork, 
On one leafless bush I found two individuals established whose several 
premises had been merged into one by the blending of the two labyrinths. 
(ig. 120.) It was quite a case of codperative housekeeping; or, 
Cooper- to make a closer analogy, it suggested the double houses one 
eit often sees in city architecture, with united party wall and com- 
House- : 
keeping. ™on porch separated by a rail. The cross lines of the two 
mazes completely blended; one spider was domiciled under a 
leafy roof, the other under a woyen tent; one orb faced toward the front, 
the other toward the side of the united labyrinth, 
The Labyrinth Spider has a very wide distribution through the United 
States, and will probably be found to inhabit our entire territory. It has 
been traced from New England south and westward to Colorado 
aa , and California, and I haye specimens from several States of 
aphica, : 
prea South America, ‘These last, like numerous examples from South- 
Ain: ern California, differ from the more northern fauna in being 
larger and somewhat more brightly marked, heir cocoons are 
also larger, and probably their snares are more formidable; otherwise, they 
are substantially the same species. It, therefore, must be added to that class 
of our aranead fauna whose physical elasticity enables them to occupy with 
equal facility a far northern and far southern home. However, in questions 
of geographical distribution, the factor of vertical distribution ought not to 
be forgotten, A far southern species may have a practically boreal habitat 
by elevation upon a mountain range. I cannot speak positively as to this 
point concerning South American Labyrintheas, but the specimens from 
Southern California were taken from the seashore and the ordinary level 
of San Diego. 
lite 
One of the most abundant of the small group of spiders that weave 
sectoral orbs is Epeira triaranea, so called because of its composite snare, 
which combines with that of the Orbweaver a decided retitelarian 
web, and a quite good approximation to that of the tubeweayer,! 
I have found the orbs of this species, from June Ist throughout 
the summer, on bushes, shrubs, trees, hedges, on and between fences, and 
Epeira 
triaranea. 
' This spider was first noticed by me under this name in Proceedings Academy of Nat- 
ural Sciences, Philadelphia, 1876, page 201, Subsequently, in the same journal, 1878, page 127, 
I gave a full description of the animal and its spinningwork, with figures, under the name of 
peira globosa, a spider closely resembling my species, which had been described by Key- 
serling, Verhand., d, zool.-bot. Ver., XX., 1865, page 820. I had the name changed at that time 
in the page proofs of my paper, but being now less certain as to the identity of Keyserling’s 
species I follow Mr. Mmerton in returning to my original name, It is not improbable that 
Keyserling’s name will be finally given priority. 
a Pee ee ee I eee 
