1898.] 



NATURAL SCIENCES OF PHILADELPHIA. 



541 



Scomber 341 



Scornbridae 341 



Scopus 497 



Scorpaena 344-346 



Scorpsenidae 344 



Scotophilia 321 



Scrophulariaceae 385, 391, 



400, 406 



Scutellaria ... 39, 310 



Sechium 412 



Sectilumen .... 271, 276 



Seiurus ..... 85, 86 



Sedum . . . .28, 302, 403 



Selaginella 386 



Selasphorus 211 



Senecio . 373, 392, 400, 



408, 412 



Sepsidse 163 



Sepsis 163 



Serranidae ...... 341 



Serranus 341 



Sesuvium 378 



Shepherdia . - . . 40, 310 



Sialia 88, 218 



Sibthorpia 406 



Silene 410 



Siliquaria 59-61 



Siphonostoraa 268 



Simorhynchus . . 128, 129 



Sisymbrium 380 



Sisyrinchium . . . 398, 402 



Sitta 86 



Smyrnium 28 



Solanacese 382, 390, 394, 



399, 406 

 Solanum 382, 391, 394, 



399, 400, 406 



Solea 347 



Solecurtus 59-61 



Soleidae 347 



Solen ... 59, 61, 62, 418 



Solenoglyphae .... 108 



Solidago . . .34, 306, 385 



Somalia 181 



Somateria 138 



Sophora 354 



Sorbus 47, 315 



Sparidae 341 



Sparisoma 343 



Spartina . . .46, 270, 314 



Spartocentrum .... 282 



Spatula 498 



Speotyto .... 209, 354 



Sphaeralcea 381 



Sphseroides 344 



Sphecodes 56 



Sphyraena 340 



Sphyraenidae 340 



Sphyrapicus 210 



Spinus .... 83,213, 214 



Spiraea .... 26, 49, 301 



Spiranthes 398 



Spiroceramus 281 



Spirostemma 270 



Spisula 418 



Spizella .... 83, 214 



Spondyliosoma .... 342 



Squalida? 339 



Stachys 405 



Stauroneis 422-427 



Steganopodes 497 



Stegastes 343 



Steuanthium 397 



Stenodermata 333 



Stephanopyxis .... 423 



Stercorariidae 130 



Stercorarius . . . 130, 131 



Sterna 133 



Sternobrithes 157 



Stevia . 392, 396, 397, 400 



Stipa 45, 314 



Stratiomyidae 157 



Strigilla 62 



Stropbina . . 269,271, 279 



Struthiolaria 190 



Sturnella .... 82, 213 



Subulina 284 



Succinea 354 



Surirella 110 



Swertia 36 



Sylvania 86 



Sympetrum 154 



Symphoricarpos . . 49, 400 



Synodontidae 340 



Synodus 340 



Syuceca ....;.. 446 



