squirrel, golden-majiUed ground, Cih-llus lateralis, 301 

 squirrel, gray, Scn4>us carol inensis, 114-115, 115-116, 



140, 145-146, 228, 295, 296 

 squirrel, ground, CiUllus. 128, 128-129, Table 25-1, 



187, 321, 322, 326, 329, 330, 337 

 squirrel, Kaibab, Sciurus kaibabensis, 148 

 squirrel, northern flying, Glaucomys sabrinus. 302-303 

 squirrel, red, Taniiasciurus hudsonicus. 110, 302-303, 



308 

 squirrel, Richardson's ground, Citellus richardsonii. 



Table 9-4 

 squirrel, rock, Citellus variegattis, 311, 312, 335 

 squirrel, round-tailed ground, Citellus tereticaudus. 



335 

 squirrel, southern flying, Glaucomys volans. Fig. 9-12, 



136, 295 

 squirrel, spotted ground, Citellus spilosoma, 335 

 squirrel, 13-striped ground, Citellus tridecemlineatus. 



Table 9-3, Table 9-4 

 squirrel, Townsend's ground, Citellus townsettdii, 336- 



337 

 squirrel, western gray, Sciurus griseus , 311 

 squirrel, white-tailed antelope, Citellus leucurus. 336- 



337 

 stag-moose, Cervalces scotti (fossil mammal), 285 

 starfish, Asteroidea (echinoderm), 237, 363, 365, 366, 



371 

 starling, Stuitius vulgaris (bird), Fig. 10-1, 145-146, 



150, Table 15-1, Table 15-2, Table 15-5, 211, 297- 



298 

 sticitleback, Gasterosteidae (fish), 64, 319 

 sticklebackythreespine, Gasterosteus aculeatus. Fig. 2- 



6, 7 

 Stomatopoda (crustacean), 357 

 stonecat, iVoturus flatus (fish). Table 5-2 

 stonefly, Plecoptera, 43-44, 45-46, 53, 55, 82-83, 85, 



Fig. 5-4, Table 3-1, Table 5-3, Table 5-4, Table 5-5 

 Stratiomyidae (soldier flies), 57 

 striders, water, Gerridae, Veliidae, Mesoveliidae, 81, 



83-84, 87, Table 3-1, Table 7-1 

 sturgeon, Acipenser (fish), 74-75 

 Suaeda (shrub), 334-335 

 sucker, Catostomidae (fish), 19, 51, 54, 74-75, 85, Fig. 



5-1, 272 

 sucker, hog, Hypentelium nigricans, Table 5-2 

 sucker, white, Catostomus comniersoni. Table 5-2 

 sugarberry, Celtis laevigata (tree), 113 

 sumac, smooth, Rhus glabra (shrub), 112, 187 

 sumac, staghorn, Rhus typhina. 190 

 sunbird, Nectariniidae, 271-272 

 sun-bittern, Eurypgidae (bird), 270 

 sundew, Drosera (plant), 187 



sunfish, Centrarchidae, 50, 54, 64, 74-75, 90, Fig. 5-1 

 sunfish, green, Lepomis cyanellus. Table 5-2, 175 

 sunfish, longear, Lepomis megalotis. Table 5-2 

 sunfish, orangespotted, Lepomis humilis. Table 5-2 

 swallow, Hirundinidae (birds), 250 

 swallow, barn, Hirundo rustica. Table 15-5, 250, 297- 



298 

 swallow, tree, Iridoprocne bicolor, 253, Table 7-4 

 I swallow, violet-green, Tachycinata thalassina, 297-298 



swamp-loosestrife, Decodon verticillatus(p\a.nt), 79-81 

 swan, whistling, Olor columbianus (bird), 318-319 



sweetgum, Ltquidambar styraciflm (tree), 113, 282 



swift, chimney, Cliaetura pelagica (bird), 261, 297-298 



swift, European, Apus apus, Table 15-5 



swordfish, Xiphiidac, 178, 371 



sycamore, Platunus (tree), 282 



sycamore, American, Platanus occidenlalis. Fig. 8-11, 



112, 113, 113-114, 116-117, 297 

 Symphyla (primitive arthropods). Fig. 9-6, 39, Table 



9-8 

 Syrphidae (fly), 57 



tabanidae (see horse fly) 



tamarack, Larix laricnia (tree), 92, Fig. 7-5, 121, Table 



7-6, 302, 309-310 

 tamerisk, five-stamen, Tamarix penlandra (tree), 113 

 tanager, hepatic, Piranga flaua (bird), 311-312 

 tanager, scarlet, Piranga oliuacea. 296, 305, Table 23- 



1, Table 7-4 

 tanager, summer, Piranga rubra, 298, Table 8-6 

 tanager, western, Piranga ludoviciana. Fig. 23-5, 307 

 tapeworm, Cestoda (parasitic flatworm), 178-179, 180 

 tapeworm, snake, Ophiotaenia perspicua. Fig. 12-2 

 tapir, Tapiridae (mammal). Table 27-2, 270, 271-272, 



347 

 Tardigrada, Arthropoda (water bears), 39, 47, 71, 104- 



105, 130, 319, 320 

 tarsier, Tarsiidae (primate mammal), 271-272 

 tayra, Tayra tayra, (mammal). Table 27-2 

 telson-tail, Protura (insects), Table 9-8 

 Tendipes plumosus (see fly, red midge) 

 termite, Isoptera (insect). Fig. 12-1, 109, 164, Table 



9-8, 174, 175-176, 177, 179, 251, 311-312, 338- 



339, 344, 347, 349 

 termite, meridian, Amitermes meridio>ialis. Fig. 27-7 

 tern, Sterna virgata. S. vittala (birds), 247 

 tern, arctic. Sterna paradisaea. Fig. 10-10, 318 

 tern, common. Sterna paradisaea. Fig. 15-4, 215 

 Thais lapillus (snail), Table 28-1 

 Thallophyta (algae), 362-364 

 thrasher, Benedire's, Toxostoma bendirei (bird), 335- 



336 

 thrasher, brown, Toxostoma rufum, Fig. 12-5, 297- 



298, Table 8-6 

 thrasher, California, Toxostoma redivivum, 312 

 thrasher, Crissal, Toxostoma dorsale, 335-336 

 thrasher, curve-billed, Toxostoma curvirostre , 335- 



336 

 thrasher, LeConte's, Toxostoma lecontei, 335-336 

 thrasher, sage, Oreoscoptes montanus. 337 

 thrip, Thysanoptera (insects). Table 9-7, Table 9-8 

 thrip, rose, Thrips imaginis, Fig. 16-11, 231-232 

 thrush, gray-cheeked, Hylocichla minima (bird), 306 

 thrush, hermit, Hylocichla guttata. Fig. 23-3, 302-303, 



Table 23-1 

 thrush, Swainson's, Hylocichla ustulata. Fig. 23-3, 302, 



303, Table 23-1 

 thrush, varied, Ixoreus naevius, 307 

 thrush, wood, Hylocichla mustelina. 296, 305, Table 



8-6, Table 23-1, Table 7-4 

 thuja, Thuja (tree), 121 



Index 465 



