VOL. III.] A Nezv Jumping Spider. 335 



Female, first and second leg of a uniform light-brown with a black 

 tip, light and dark hairs, sparse scale-hairs on all except first two 

 joints. Third and fourth legs same with tarsus and metatarsus lighter. 

 Some have a narrow dark ring on tibia of the third and fourth pairs; 

 others have a dark ring on patella, tibia, and tarsus of the same. 

 Palpi light-brown with light hairs. 



The markings of this spider often j-ub off, giving rise to individual 

 differences. 



This brilliant bit of a spider is quite common about San Francisco 

 Bay, but has not yet been reported elsewhere. It is found on many 

 plants, but in gardens where I have observed it most, it is more fre- 

 quently seen on honeysuckle, rose bushes, live-oaks, and the shrub 

 known as laurestina. The last two seem to offer peculiar advan- 

 tages, for not only do the leaves lie closely together, but the oak 

 leaves are curled and the laurestina leaves are quite often rolled 

 lengthwise. Between two leaves in the one case, or within the rolled 

 leaf in the other, the spider finds a safe retreat, while the dead live- 

 oak leaves, where they lodge together in hollows, furnish spacious 

 cavities between them for the web domiciles. 



The domicile is a simple flat tube, open at both ends, with some- 

 times an oj^ten branch tube from the main one. The spider enters 

 by inserting the fore legs between the sheets of webbing and holding 

 them apart as it forces its way in. If there is danger of intruding foes, 

 the spider holds the sheets together with the fore legs at the end 

 most threatened. 



The flat cocoon which contains the yellowish eggs is made within 

 the tube, and the young ones share the parent domicile until after 

 the second moult, when they depart on aeronautic tours of explora- 

 tion for themselves. 



The males and females appear as adults as early as April, but the 

 former become rare after the first of June and the latter after the first 

 of September. The females begin laying eggs in May. The num- 

 ber of cocoons made by a single female is not more than two, and 

 probably, judging from captives, the general rule is to make but one. 

 The eggs, about fifty in number, hatch on the average in about 

 twenty-five days, and the young are found at all times of the year. 



Dendryphantes ^neolus is one of our so-called flying spiders, 

 the young being especially given to that progressive method of loco- 



