354 AMERICAN SPIDERS AND THEIR SPINNINGWORK. 
Thus we see that it is possible to trace a close resemblance and apparent 
relation between the spinningwork of the Tubeweayers as represented by 
Agalena and the principal genera of the great tribe of Lineweavers. 
Let us start again, but from another standpoint, in the tribe of the 
Tubitelarie. The Clubionide represent a very important and interesting 
group, many of whose genera are characterized, as we have learned, by 
the special spinning organs known as the cribellum and calamistrum. 
Let us take, for example, the genus Dictyna, a species which I have here- 
tofore described as the Wall loving Dictyna (D. philoteichus). It is very 
common in the city and suburbs of Philadelphia. Its interesting snare is 
spun everywhere upon fences and walls, in the angles of outbuildings and 
upon leaves of vines and various plants. The central point is a little tube 
woven against the site in which the snare is pitched. From this outgoing 
lines proceed, diverging as they go, somewhat after the manner of the radii 
in an Orbweaver’s web. Between these lines is spun a flocculent thread, 
consisting of minute filaments which have been teased by the calamistrum. 
This curled thread is laid in between the radii quite after the fashion of 
the zigzag ribbon characteristic of the orb of Argiope. That is to say, it 
crosses diagonally from one diverging line to another, as repre- 
Dictyna’s sented in the Fig. 344. It is the habit of Dictyna to overlay 
Orb like . : PRs ; 
Web. one snare with another until the strata of spinningwork, if I 
may so call them, are laid several deep. I have often observed 
them upon the walls and fences in Philadelphia thus spun out from the 
central tube in all directions, until they present so strikingly the appear- 
ance of a lace collar that the most casual observer at once notes the resem- 
blance. I think one cannot fail to see in the form of this snare a sugges- 
tion of the round web of the Orbweaver, with its radiating lines diverging 
from the centre. ; } 
From this peculiar snare of a representative genus of the Tubeweavers . 
we may be easily led, by the analogy of spinningwork, to a family that 
confessedly lies on the very margin of the Orbweaying genera, 
namely the Uloborine. In the genus Hyptiotes the Triangle spi- 
der has a snare consisting of four diverging lines, or a single 
sector of an Orbweaver’s web. Now, we are compelled to observe that the 
threads by which these diverging lines are united is precisely of the char- 
acter of that used by Dictyna in uniting her diverging lines, and this 
thread is spun eut by precisely the same kind of spinning organs—the cri- 
bellum and the calamistrum. We have thus established a striking relation 
on this side of the cireuit between the Tubeweavers and the Orbweayers, 
as on the other side we showed a relation between the Tubeweayers and 
the Lineweavers. 
The progress of these analogies may be further traced. Hyptiotes 
shows but a single sector of a circle, whose radiating lines are united by 
the teased thread characteristic of the tubemaking Ciniflonide ; but we 
The Ulo- 
borine. 
