GENEKAL (,'OCOOXIN'<i HAIUTS OF SPIDEKS. 



i;]r 



I''io. 163. Female Se- 

 gestria canities. 



inward for two inches and more. Tlie silk of the tube was fine, but the 

 flap of netted work bj^ wliicli it was attached to either side was of coarser 

 fibre. (See Fig. 162.) The tubes were spun all the way 

 up the fissure to the fork of the trunk. 



The spiders watch near the orifice of their tubes with 

 the first three pairs of legs directed forward, an unusual 

 position, as spiders usually haye only the first two {lairs 

 thrust outward. 



Tlic cocoon, containing twenty or tliirty eggs, is placed 

 within the inner i>art of the tube in July and August. 

 Enierton ' saw one in this position July 10th, and an- 

 other under a stone with a cocoon containing thirty-four 

 eggs. The English Dysdera hombergii spins her egg sac 

 within her tube in June ; it is an oval cell, within which 

 are from twenty to thirty pinkish eggs loosely bound togetlier. The cell is 

 slightly woyen, and is coyered with particles of gray el or other extraneous 

 matter. It tluis appears that the cocooning habits of the genus as rep- 

 resented in Europe are the same as those of our American species. 



In material sent me from San Bernardino, California, by Mr. Wright, 

 were cocooning nests of a peculiar type made by a species of Segestria, 

 which appears to be new, and which I haye named Segestria 

 canities. (Fig. 163.) The species was determined from young- 

 spiders found enclosed in some of the cocoons. Subsequently, I 

 received from the same section, through Mrs. Eigenmann, two mature 

 females, whicli enabled me to confirm my previous determination, and 

 thus to identify the cocoons which are here described. The species is 

 shown at Fig. 163, and a view of the face at Fig. 164. ^ 



The mother Segestria spins a series of flattened disks, which are over- 

 laid one upon another like tiles upon a roof, and are bound by silken 

 threads somewhat after the fashion of Epeira labyrin- 

 thea's cocoons. This series of cocoons is sonaetimes three 

 inches or more in length. The examples sent me were 

 covered (apparently intentionally) with leaves, from the 

 jilant upon which the string had been suspended, resem- 

 bling the leaves of spruce or hemlock. Along the entii'e 

 length of one side of the cocoon string the mother 

 had spun a silken tube, within which she dwelt. The 

 manner in which the string is suspended is represented 

 in Fig. 16.1. It hangs within a maze of intersecting cross lines like the 



Segestria 

 canities. 



Fifi. 164. View of eyes 

 and face of Segestria 

 canities. 



' Notes, Hentz's Spiders U. S., page 22. 



-The spider is about three-eighths inch long; the eephalothorax bruwii, the abdomen 

 brownish yellow covered thickly with white hairs, which also strongly mark the cephalo- 

 thorax, suggesting its specific name. The legs are yellow, with brown rings at the joints 

 and a similar ring in the middle of the tibia. 



