INDEX OF GENERA. 



387 



Rbypticus 1G3, 178 



Rocdlaria 143 



Rubus 61 



Rurupbia 359 



Saccarius 90 



Sagina 58 



Salix 76, 95 



Salvia 72 



Sanguinolites 13, 18 



Saurothera 283 



Saxicava 141 



Saxifraga 62, 94 



Scaphechinus 359 



Scaphiopus 51 



Scams 178 179 



Sceloporus 105 



Sciades 171 



Sciaeninae 28 



Sciaenops 28 



Scirpus 77 



Selerostomum 42 



Scoloplos 140 



Scorpaena 178 



Scorpius 107 



Scutellaria 72 



Sebastes 207, 332 



Sebastoplus 208 



Sedum 62 



Seiurus 294 



Semicossypbus 330 



Senecio 67 



Setophaga 293 



Serranus 176, 178, 179 



Shepardia 75 



Sibbaldia 61 



Sidalcea 59 



Silene 58, 94 



Sipbonornis 286 



Sipbonostoroum 140 



Sisymbrium 57 



Sitaniom 79 



Suaecticus 164 



Smelowskia 58 



Smilacina 76 



Solanum 74 



Solidago 64 



Solenostomus 179 



Soliera 96 



Sophora 61 



Spartina 78 



Spelerpes 54 



Speruiopbilus 157 



Spirigera 6 



Spbaerecbiuus 357 



Spbyraeua 86, 179, 187 



Spbjrna 179 



Sphyrapicus 204 



Spindalis 296 



Spiraea 61 



Spirantbes 76 



Spirorbis 141 



Splachnum 96 



Sporobolus 78, 79 



Stanleya 58 



Stellaria 59, 94 



Stellifeius 28 



Stercorarius 124, 128, 135 



Stereocaulon 96 



Stereolepis 329 



Stipa 78, 79 



Stepbanomeria 69 



Straparollus 20 



Strepbobasis 321 



Strepoma 274 



Strepomatidae 273, 306 



Streptantbus 57 



Streptopus 76 



Stropbalosia 4 



Strix 153 



Surirella 338 



Symphoricarpus 63 



Synedra 339 



Synodus 17S 



Syntbyris 72 



Syringotbyris 6 



Swertia 74 



Tacbornis 



Tsenioglossa 



Talinum 



Tantilla , 



Taraxacum 



Tecturella 



Temnopleurus 



Temnotaema 



Tetradon 



Tetronarce 



Terebella 



Teredo 



Tbaspium 



Tbea 



Tbelesperma 



Thelypodium 



Tbemisto 



Tbermopsis 



Tblaspi 



Thrichodiadema 



Tinuunculus 



Tofieldia 



Torcumatica 



Townsendia 



Toxocidaris 



Toxopneustes 



Tracb\ cephalus 



Tracbynotus 84, 



287 



33 



59 



100 



69 



140 



358 



358 



178 



333 



141 



280 



63 



276 



65 



58 



139 



60 



58 



354 



152 



95 



358 



66 



356 



357 



43 



332 



