A NEW JUMPING SPIDER. 
BY JOHN L. CURTIS. 
The subject of the following description is a spider which has been 
carefully studied by the writer for some time past. It was recently | 
submitted to Prof. G. W. Peckham, who has pronounced it a new 
species of the genus Dendryphantes. Accordingly, I have thought 
it timely to publish a short description of the spider, together with 
such notes on habits, etc., as I have collected. The following will, I 
think, sufficiently identify it. 
oe DENDRYPHANTES “NEOLUS. 
Total length, 5.4 mm.; width of abdomen, 2.2 mm. 
Cephalothorax, length, 2.4 mm.; width, 2.2; height, 1.8 mm. 
Legs, 8.3 mm., 5 mm, 4.6 mm., 6.2 mm. Patella and tibia of the 
first, 2.7 mm.; patella and tibia of 2d, 1.6 mm.; patella and tibia of 3d, 
1.6 mm.; patella and tibia of the 4th, 2 mm.; metatarsus and tarsus of 
the 4th, 1.6 mm. 
Total length, 6.7 mm.; width of abdomen, 2.6 mm. 
Cephalothorax length, 2.6 mm.; width, 2 mm.; height, 1.6 mm. 
Legs, 6.2 mm., 4.9 mm., 4.4 mm., 5.9 mm. Patella and tibia of 
ist, 2 mm.; patella and tibia of 2d, 1.6 mm.; patella and tibia’ of 3d, 
1.2 mm; patella and tibia of 4th, 1.8 mm.; metatarsus and tarsus of 
4th, 1.7 min. 
geCephalothorax moderately high, convex, a very little dilated 
behind dorsal eyes with sides nearly vertical in front and rounded 
behind, Ephalic part level, thoracic part falling rather abruptly. 
Quadrangle of eyes occupying one-third of cephalothorax, one-half 
wider than long,same width beforeand behind. First row of eyes bent, 
inclined slightly downward, middle eyes sub-touching, lateral about 
one-third as large as middle eyes and separated from them by one- 
fourth of their own diameter. Eyes of second row midway between 
dorsal and lateral eyes ¢, a little farther from dorsal than from lateral 
eyes £. Dorsal eyes a little smaller than lateral eyes, farther from 
each other than from lateral borders, forming a row as wide as the 
cephalothorax at that place. Clypeus perhaps inclined a little back- 
wards, one-third as high as middle eyes in ¢, four-fifths as high as 
middle eyes in #. Falces wider than the two middle eyes, reaching 
to inner margins of lateral eyes, once and a halfas long as face ¢?, 
divergent, inclined slightly forward. Fang strong ¢, vertical, paral- 
