LIST OF ILLUSTRATIONS xxiii 



PAGE 



FIG. 358. Andropogon furcatus 245 



FIG. 359. Luxuriant Grasses of Wet Prairie . . . . .245 



FIG. 360. Smartweed, Polygonum lapathifolium 246 



FIG. 361. Chickweed, Ceraslium vulgatum 247 



FIG. 362. Three Species of Cardamine: C. Douglassii, C. bulbosa, 



C. Pennsylvania 247 



FIG. 363. Mermaid Weed, Proserpinaca palustris .... 247 



FIG. 364. Skull Gap, Scutdlaria galericulata 247 



FIG. 365. Cardinal Flower, Lobelia cardinalis 248 



FIG. 366. Shooting Star, Dodecatheon meadia 249 



FIG. 367. Wild Hyacinth, Camassia esculenta 249 



FIG. 368. Wild Onion, Allium cernuum . . . . . . .250 



FIG. 369. Culver's Root, Veronica virginica 250 



FIG. 370. Golden Old Man, Zizia aurea 250 



FIG. 371. Brown-eyed Susans, Rudbeckia'hirla .'. . . .251 



FIG. 372. Coneflower, Brauneria pur pur ea 251 



FIG. 373. Rosinweed, Silphium terebinthinaceum 252 



FIG. 374. Dropseed Grass, Sporobolus cryptandrus . . . .252 



FIG. 375. Prairie Phlox, Phlox pilosa 252 



FIG. 376. Rattlesnake Master, Eryngium yuccifolium . . .253 

 FIG. 377. Prairie Clover, Petalostemum purpureum . . . .254 



FIG. 378. Lead Plant, Amorpha canescens 254 



FIG. 379. Chimney of Burrowing Crayfish 254 



FIG. 380. Striped Gopher, Citellus tridecemlineatus . . . .255 



FIG. 381. Pocket Gopher, Geomys bursarius . ... . . . 255 



FIG. 382. Pennsylvania Meadow Mouse, Microtus pennsyhanicus . 256 

 f a, The Two-lined Locust, Melanoplus bimttatus; b, Red- 

 legged Locust, M. femur-rubrum; c, The Short-winged 

 Grasshopper, Xiphidium brevipenne; d, The Meadow 

 Grasshopper, Orchelmium vulgar e; e, The Sprinkled 

 Grasshopper, Chlocaltis eonspersa; f. The Green- 

 legged Locust, Melanoplus viridipes 



FIG. 384. Sawflies and Larvae 257 



FIG. 385. The Cutworm and Its Moth, Feltia subgothica . . . 257 

 FIG. 386. The Salt-Marsh Caterpillar, Estigmena acraea . . . 257 

 FIG. 387. The Yellow Bear Caterpillar, and Moth, Diacrisia virginica 257 

 FIG. 388. The Woolly Bear Caterpillar, and Moth, Isia Isabella . 258 



CHAPTER XII 



FIG. 389. Bluff with Xerophytic Vegetation 260 



FIG. 390. The Common Scouring Rush, Equisetum hyemale . .261 



FIG. 383. 



256 



