53 



INDEX 



Shell- fish and disease, 228 



Ship-worms, 229 



Shrews, 311 



Shrimps, 118 



Sialidae, 167 



Silk- worm, *ij6, 334 



diseases, 364 



Silpha ramosa, antenna, *i3o 

 Siluridae, 248 



Silvanus surinamensis , *4Q7 

 Silver-fish, 155, 156 

 Simiidae, 319 

 Simulidae, 385 

 Simulium, *386 

 Siphonaptera, 172 

 Siren, 256 

 Sirenia, 301 



Sitotroga cerealella , 497 

 Skates, *246, 247 

 Skunk-bear, 314 

 Skunks, 314 

 Sleeping sickness, 352 

 Slime moulds, 35 

 Slime slugs, 123 

 Sloths, 300 

 Slugs, 231 

 Smelt, 252 



Smynthurus hortensis, 155 

 Snails, 230 



Snake-bites, treatment, 271 

 Snakes, 267 



coral, 270 



garter, *268 



king, *26g 



water, 269 

 Snow-flea, 167 

 Soft brown-scale, 453 

 Sow-bug, *i2i 

 Sparrow, *287 

 Species, defined, 51 

 Spermophiles, 310, 311 

 Sphargis coriacea, 264 

 Sphecina, 183 

 Spenophorus sp., 491 

 Sphinx-moth, mouth-parts, "148 

 Spiders, 206 



hour-glass, 207 

 Spilogale, 314 

 Spirochceta, 356 



S. duttoni, 357 



S. marchouxi, 357 



5. novyi, 357 



Spirochceta pallidula, 357 



S. recurrentis, 357 

 Spirochaetae, 34 

 Spirochaetes, 355 

 Spirochaetosis, 357 

 Sponges, bath, *6i 



boring, 62 



classified, 62 



structure, 58 



vase-shaped, *59 

 Spontaneous generation, 36 

 Sporozoa, 34, 357 

 Spotted fever, 364 

 Spring-tail, *iss 

 Sqstabu, 246 

 Squamata, 262 

 Squash-vine borer, 487 



bug, 487 



Squids, 233, *23S 

 Squirrels, 310 

 Stable-fly, *366, 382, *383 

 Star-fish, cross section of ray, 



*92 



dissection, *go 



structure, 89 

 Steganopodes, 280 

 Stegomyia fasciala, 373, *374 

 Sting-rays, 247 

 Stomach- worm, 81 

 Stomoxys calcitrans , *365, *383, 



.387 



Stone-flies, *i57 

 Strawberry crown-borer, 472 



crown-moth, 473 



root-louse, 473 



root- worms, 473 



weevil, 473 



Striped cucumber-beetle, 486 

 Strongylocentrotus franciscaniis, *94 

 Strnthio camelus, 279, 333 

 Sturgeons, 247 

 Suckers, 248 

 Sulphur-lime, 415 

 Sunfishes, 253 

 Surf-fish, 253 

 Surra, 354 

 Sus scrofa, 327 



5. viftatus, 329 

 Swamp fever, 366 

 Swans, 280, 333 

 Sympetrum illoliim, *i59 

 Syphilis, 357 



