LIST OF ILLUSTRATIONS xix 



PAGE 



FIG. 197. Pennsylvania Saxifrage, Saxifraga pennsyhanica . .178 



FIG. 198. Sensitive Fern, Onoclea sensibilis 179 



FIG. 199. Sour Gum, Nyssa syhatica 180 



FIG. 200. Swamp Holly, Jlex verticillata 181 



FIG. 201. Meadowsweet, Spiraea salicifolia 181 



FIG. 202. Steeplebush, S. tomentosa 181 



FIG. 203. Royal Fern, Osmunda regalis . . . . . . .182 



FIG. 204. Clayton's Fern, Osmunda Claytoniana . . . . 182 

 FIG. 205. Cinnamon Fern, Osmunda cinnamomea . ...,-.' 182 



FIG. 206. Second Type of Pond 183 



FIG. 207. Shrubby Cinquefoil, Potenlilla fruticosa .... 184 

 FIG. 208. A Small Clam, Sphaerium simile . . . . . .184 



FIG. 209. Nymph of Anax 184 



FIG. 210. Nymph of Leucorhinia inlacia, after Shelford . . . 185 

 FIG. 211. Adult Libellula pulchella, from Needham .... 185 

 FIG. 212, A. and B Aquatic Insects and Their Young . . 186, 187 

 FIG. 213. Diving Spider, Dolomedes sexpunctatus .... 188 



FIG. 214. The Eft, Diemictylus mridescens 189 



FIG. 215. Garden Spider, Argiope . . , " 190 



FIG. 216. Teitix granulaius, Tettigidea lateralis 190 



FIG. 217. Short-horned Locust, Tryxalis brevicornis . . . .191 

 FIG. 218. Short-winged Green Locust, Dichromorpha viridus . .191 

 FIG. 219. Slender-bodied Locust, Leptysma marginicollis . . . 191 



FIG. 220. Hoosier Locust, Paroxya hoosieri 191 



FIG. 221. Scudder's Paroxya, P. scudderi 191 



FIG. 222. Striped Ground Cricket, Nemobius fasciatus . . . 192 

 FIG. 223. Leather-colored Locust, Schistocerca alulacea . . .192 

 FIG. 224. Nebraska Locust, Phaetalioles nebrascensis . . . . . 192 

 FIG. 225. Marsh Conehead, Conocephalus palustris .... 192 



FIG. 226. A Sphagnum Bog 193 



FIG. 227. The Slender Sedge, Carex filiformis 193 



FIG. 228. The Shore Sedge, C. riparia 193 



FIG. 229. An Orchis, Arelhusa bulbosa 194 



FIG. 230. The Bearded Orchis, Calapogon pulchellus .... 194 



FIG. 231. The Sundew, Drosera rolundifolia 195 



FIG. 232. Tickseed, Coreopsis grandiflora 195 



FIG. 233. Cottony Grass, Eriophorum gracile 195 



FIG. 234. Swamp Horsetail, Equisetum fluviatile . . . . ".195 



FIG. 235. Swamp Fern, Aspidium Thelypteris 195 



FIG. 236. Sphagnum Moss 195 



FIG. 237. Ragged Orchis, Habenaria lacera 196 



