363 
Blackwall, 26, 28, 49, 56, 61, 63, 75, 76, 85, 93, 
129, 231, 249, 279, 317; classification of 
spiders, 17; experiments with poison of 
spiders, 271. 
Bowing the snare, 198. 
Bridge lines, 342. 
Bridges, of spider silk, 63, 64, 65; snare of 
Stilt spider, 157, 158. 
Bridge suspension of Theridium, 224. 
Bucholz, Dr. Reinhold, anatomy of spinning 
organs, 35, 40; see Chapter IT. 
Bucholz and Landois, 42; see Chapter IT. 
Caddis flies, various nests of, 333, 334. 
Capturing insects, 206. 
Calamistrum, 26, 177, 186, 351; of Hyptiotes, 
186. 
Cambridge, Rev. O. Pickard-Cambridge, 19, 
23, 27, 28, 62, 174, 195, 204, 263, 272, 279. 
Campbell, Mr. F. Maule, 143, 262. 
Cannibalism, 259. 
Capturing insects, by Labyrinthea, 132. 
Cephalothorax described, 21. 
Central space, economy of, 56. 
Chandler, Mr. Horace P., photograph of 
Epeira’s nest, 110. 
Ciniflo atrox, 278. 
Citigrades, 16, 20, 347. 
Classification, general divisions, 17. 
Claws, used in hanging to snare, 55. 
Cleaver, Mr. P., 248. 
Climate, limiting distribution, 163. 
Cocoon, influence of position, 259; egg bag 
of Lycosa, 327; of Theridium nervosum 
and T. riparium, 317; nests of Misumena 
and Philodromus, 323; tent of Attus, 327; 
tent of Water spider, 328. 
Socooning, 347; boxes for observing, 29; of 
Argiope cophinaria, 39. 
Coil of slack line, 189. 
Collecting, implements for, 31; manner of, 
28, 29. 
Color, 26; brilliancy of certain spiders, 20; 
of Nephila’s threads, 147; of Tetragnatha 
extensa, 156; of Orchard spider, 151, of 
Tetragnatha, 155. 
Composite snares, 180. 
Construction of leaf nests, 299. 
Sodperative housekeeping, 135, 348. 
Counterpoise, 210. 
Courtship of Epeira labyrinthea, 132. 
Cribellum, 178, 351. 
Cteniza californica, see Trapdoor spider, 19. 
Currents of air, use in beginning a snare, 62. 
Cyclosa caudata, 87, 128. 
j 
Cyclosa bifurea, 128. 
Cylindrical glands, 42. 
Cyrtauchenius elongatus, 322. 
Darting threads, 45. 
Darwin, 234. 
Decoration, ribbon cords, 57; ribbons of 
borus, 175, 176; on orb of Argiope, 
flossy, on Gasteracantha’s web, 123. 
De Laet, 233. 
Development of Labyrinth spider’s web, 134; 
of habit in Triaranea, 141, 142, 162, 247. 
Dews, effect of, on webs, 231, 232. 
Diagram of spinning organs, 39. 
Dictyna, 354; curled thread of, 348; snares 
of, 349. 
Dictyna philoteichus, webs of, 348. 
Diptera, indifference to a spider, 257. 
Direction, sense of, 248. 
Distribution, 109, 182; vertical, of Domicile 
spider, 116; effect on Epeira strix, 111. 
Dolomedes scriptus, 311. 
Dolomedes sexpunctatus, nest of, 347, + 
Dolomedes captures a-spider, 236. 7 €* 
Domed orbs, 150, 164. 
Domicile spider, see Epeira domiciliorum. 
Dragline, 60, 61, 342. 
Drassus ater, spinning spools, 49. 
Drassus, falx and fang of, 272; nest of, 316. 
Drinking, 262. 
Duct, of silk glands, 42; length of, in Tege- 
naria, 49. 
Dysdera, 223. 
Dysdera bicolor, 222. 
Ulo- 
107 ; 
a 
Edwards, Rey. Dr. Jonathan, observation of 
spiders, 68. 
Bigenmann, Mrs. Rosa Smith, 120, 122, 125, 
142, 211, 298. 
Emerton, J. H., 59, 86, 106, 129, 178, 186. 
Enemies of spiders, 152. 
Engineering skill of spiders, 208, Chapter 
XIII, 342, 343. 
Environment, influence in selecting web 
sites, 68; influence on food, 259; on dis- 
tribution, 163; power to resist, 163. 
Epeira, figure of face, 21; floating on the 
water, 161; the most common species, 110 ; 
orbs of, frequent, 56; orbs over water, 64. 
Epeira apoclisa, 93, 299. 
Epeira basilica, its discovery, 164; form of 
snare, 165; figure of the spider, 165; 
architecture of snare, 166; manner of 
building the dome, 168; cocoons, 169; 
web relations with Orchard spider, 168. 
