INDEX. 369 
Uloborus mammeatus, 172. 
Uloborus walckenaerius, 173, 178. 
Underhill, H. M., 27, 45, 47, 48, 49, 50, 328. 
Uniformity in type of nests, 324. 
Unity of nesting habit in Epeira, 299. 
Upholstery, spider, 301. 
Variations in habits of Epeira sclopetaria, 
115; in spinning orb plane, 150; in snare 
of Triaranea, 139; in traplines of Zilla, 
145; in traplines of Epeira, 146. 
Venom, see Poison. 
Vertical snares, 52. 
Vinson, Dr. Auguste, 95, 124, 233, 310. 
Viscid beads, 177, 205. 
Viscid lines on Tubeweaver’s snares, 351; on 
Theridium’s, 352; on Linyphia’s, see Ap- 
pendix, 
Walckenaer, M. le Baron, 23, 107, 108, 110, 
126, 157, 272. 
Walking, anchored by dragline, 60; over 
leaves, 70. 
Wallace, Alfred Russell, 233. 
Wandering spiders, tribes composing them, 16. 
Warburton, Mr. Cecil, 56. 
Water spiders, 160, 328. 
Water necessary to spiders, 261, 262. 
Wear and tear of web, 203. 
Weather, effect on Labyrinthea’s snare, 132. 
Weaving, common methods of, 325, sqq.; by 
laryee, 829; by Psocide, 331. 
Westring, Nicolas, 23, 24. 
Wilder, Prof. Burt G., M.D., 146, 180, 184, 
190, 234. 
Wind, effects of, on webs, 209. 
Wings, protective, of Argiope’s web, 104, 105. 
Wood, Rey. J. G., 212. 
Wounds, by spiders, effect of, 278. 
Wright, Mr. F. W., 275. 
Young spiders, 140, 230; habit of sailing the 
water, 160; Labyrinthea, 132; snares of 
Triaranea, 138; webs of Zilla, 144; varied 
orbs of, 151. 
Zigzag ribbon of Argiope, 97, 102. 
Zilla, 171; looped spirals of, 140; nests of, 
302. 
Zilla atrica, 144. 
Zilla callophylla, 144. 
Zilla x-notata, snare of, 142, 143; Scotch col- 
ony, 148, traplines of, 144, 211. 
Zone, notched, 56, 58; free, 58. 
