Inde> 



Tracheitis. Iranquilla. 381 

 Trachelocamptus robtratus, 372 

 Trachyrhinus, 67, 72 



favosus, 72 



marmoraius, 7 J 



rracks of orb-weayers. 204 

 Transformations, r8 1 

 I rap-door spiders, 230. 231, 238 

 Trapline, 204 

 Triangle spider. 270 

 Triangular web, 196 

 Trichogen, 138 

 Trichopore, 138 

 Trilobites, 8 



Trithyreus pentapcltis. 18 

 Trochanter. 104 

 Trochantin, 42 

 Troglohyphantes, 376. 382 



cavcrnicolus. 383 



incertus. 383 

 Troml idiidse, 88 

 Trombidium sericeum, 88 

 Trombidoidea, 87 

 Trogulidx. 65. 70 

 True spiders, the, 257 

 Trunk of the embolus. 120 

 Tubular trachea'. 147 

 Tutaculum. no. 523 

 Cypii al I >r ! • weavers, the, 443 

 Typical tarantulas. 220 

 Tyroglyphida:, 92 



Ulesanis. 336. 356 



amcricana. 356 

 Ulobl rida-, 262 

 Uloborids, 262 

 Uhborus. 263 



americanus, 263. 264 

 ulatus, 268 



plumipes. 264. 268 

 I'nca. 112 



(Jncate, 12 

 Urate cells. 158 

 Urorlontts. 30 



mordax, jo 

 Uroplcctes. 25. 26 



mcxicanus, 26 

 Uropoda, 83 

 1 ' • 107 



gracilis, 307 

 Uterus, 158. iso 



Vagina, 158, 150 

 \ .1 1 defercntia, 158 

 Veins, pulmonary, 151 

 Vejovidse, 25. 29 

 Vejovis. 30. 31 



boreus. u 



carolinus. 32 



Savus. u 



mexicanus, ,'/ 

 punclipalpi, ji 

 spinigerus, 32 



Venom of spiders. 213 

 Venous circulation. 152 

 Verrucosa. 445. 463 



arenaia. 4165 

 Visceral nervous system. 161 



I silk of Aranea. 181 

 \ 1 rid spiral. 202 

 Viscid thread. 189 

 Visual cell. 162 

 Vitreous layer, 162 

 Vitreum. 162 

 Vulva, 132 



Wagncriana. 445. 460 



taurit ornis, 460 

 Wala. 666. 667. 67Q 



palmar um. 664, 680 



mi! rata. 680 

 Wandering spiders, the, t86. 55J 

 Warp, [92 

 Water-mites, 88 

 Webs of spiders, the types of, 193 



Whip-scorpions, 13. 16 



Willibaldia. ;,V; 

 Wind-scorpions, 35 

 Wixia, 446. 466 



eclypa, 467 

 Wolf-spiders, the. 61b 



Woof. 11)2 



Xysticus. 119. 524. 5j3 

 •ms. 533 

 emerloni. 5 ,\; 

 Jernx. 522. $34 

 formosus, 334 

 guiosus 534 

 limhatus. 336 

 In tans. 336 

 ncrVOSUS, 338 

 quadrilinealus, 338 

 triguitatus, $38 



Ztlotes. 311, 316 



atcr. 316 



frigidus, 317 



rufulus. 316 

 Zilla. 113. fS7 



atrica. \$a 

 arnica, 460 



montana, 460 



x-notata, 160 

 Zilla type of orb-web, 195 

 / danidse, 323 

 / dariids, 323 

 Zora, 57' 



pumuus, S73 

 Zuninga, 672 

 Zygobailus. 664, 668. 6q6 



beltinii. < 



nervosus. ''07. 6q8 



rvfipi . r>07 



sexpumtatus . 697, 6q8 



;-' 



