INDEX. 
367 
Peckham, George W. and Elizabeth G., 109, 
173. 
Perception, accuracy of, 248. 
Perty, 17. 
Phidippus morsitans, the bite of, 276. a 
Philodromus, nest of, 323, 347. 
Phillyra riparia, see Uloborus. 
Pholeus phalangioides, 223, 353. 
Physical power of spiders, 229. 
Pliny, 241. 
Poison of spiders, 32; effects and uses of, 
Chapter XVI.; poison fangs of Argiope, 
268, 269; gland of Hpeira, 269, 270; gland 
and falx of Nemesia, 270, 271; of Epeira 
diademata, 270; of Hentz’s Tarantula, 270, 
271; effects of, 271; bite of Epeira, 272; 
inoculation with, 272; comparative harm- 
lessness, 273; venomous effects, 274; by 
Latrodectus, 275; of Nephila, 275; of Sal- 
tigrades, 276; popular notions, 277; effects 
on insects and spiders, 278; a reserve 
weapon, 280; superstitious notions con- 
cerning, 281, 282; Argiope cophinaria, 
fangs and falces, 268; position of poi- 
son gland of, 269; Epeira domiciliorum, 
poison gland of, 269; gland poison, 269, 
270; muscles surrounding poison gland, 
269. 
Prey, capture of, 67, 86, 234. 
Protective architecture, 284, see Nesting. 
Protective environment of Labyrinthea’s nest, 
132. 
Protective industry, 308; Argiope’s shield, 
99; Argiope’s wings or fenders, 104; apron 
of Orchard spider, 152. 
Protection of person, protective use of fore 
legs, 69. 
Protection, of snares by ribbons, 57. 
Psocidee, 331. 
Pulmonary sacs, 27. 
Purseweb spider, 325; see Atypus abboti. 
Pyriform glands, 40, 41. 
Radii, bent in the notched zone, 134; order 
of spinning, 75; number of, 85; single or 
double, 76; spinning the first, 74; varia- 
tion in number, 139, 140. 
Rain, dissolving spinningwork, 102; effect of, 
on webs, 92. : 
Ray, John, 61. 
Ray spider, Chapter XITI., 195; see Theridio- 
soma. 
Reasoning powers of spiders, 227. 
Rennie, 76, 86. 
Reproduction, organs of, 27; of limbs, 78. 
Retitelarize, 16, 17, 20, 342; see Lineweavy- 
ers. 
Rhizopods, shells of, 333, 334. 
Ribbon decorations, 125; temporary in Epe- 
ira, 116; possible origin of, 117. 
Robertson, Edward H., 352; describes nests 
of Theridium riparium, 317. 
Rolled leaf nests, 285. 
Romanes, 77, 78. 
Rudimentary snares, 229. 
Sailing, habit of Tetragnatha, 159. 
Saltigrades, 19, 347; nest of, 316;-manner of 
spinning, 327. 
Scaffolding, spiral, 79; removed after use, 86. 
Scaffold foundations, Nephila’s peculiar form, 
147. 
Schaffenberger, 231. 
Seudder, S. H., 19. 
Sectoral orbs, 130. 
Sedentary spiders, 15. 
Segestria senoculata, 50. 
Sewing, 285; design of, 315; by Epeira thad- 
deus, 303; manner of, 302. 
Shamrock spider, see Epeira triaranea. 
Shield, central shield of Argiope, 97; use of, 
ogt 
Shooting threads, 45, 63. 
Silk, liquid, of spiders, 39; used for sailing, 
160. 
Simon, M. Eugene, 107, 272. 
Site of snares dependent on foundation’ line, 
66, 181. 
Sloane, Sir Hans, 233. 
Snake, enmity between spider and, 241; en- 
snared by spider, 237, 238. 
Snare, as a tool for trapping, 247; wear and 
tear of, 264. 
Spigots, spinning, 36, 46, 48; see Appendix. 
Spines, tarsal, used in spinning, 81. 
Spinnerets, 34; anterior, 37; middle, 36; pos- 
terior, 35; used to clamp spiral string, 81, 
82. 
Spinning, Argiope’s 
shield, 99, 100. 
Spinning glands, of Epeira, 39, 43; of Aga- 
lena labyrinthea, 45; of Tegenaria domes- 
tica, 45; see Appendix. 
Spinning organs, anatomy of, Chapter IL, 
34; muscles regulating, 51. 
Spinning spools, development of, 50; see Ap- 
pendix. 
Spinningwork, analogies, 170; classification 
of, 284. 
Spiral threads of Dictyna, 355. 
method of spinning 
