iUL 



15U' 



I X D r^ X 



213. 



2 56. 



Acanthaces, 187. 

 Acanthoscelis acephalus. 24S. 

 Acarina, 343, 345. 347. 

 Acernegundo, 16S, 1(19. 173. 185. 

 Aceraceae, 185. 



Acerates viridiflora, 166. 173, ISO, 1,S6. 

 Achillea millefolium, 18''. 

 Acholla multispinosa, 237. 

 Acipenser. 40, 41. 



platorhynchus, 40. 

 AcmjEodera tubiilus, 224, 243. 

 Acontia lactipennis, 207, 240. 

 Acridiida?, 199-203, 211. 212, 

 Acrosoma rugosa, 23o. 

 Adalia bipunctata, 204, 242. 

 ^thus sp., 239. 

 Agallia sanguinolcnta, 236. 

 Agapostemon splendens, 226, 



texanus, 256. 

 Agelaius phceniceus, 334. 

 Ageneotettix arenosus, 259, 



deorum, 260. 



occidentalism 260. 



scudderi, 201, 222, 231, 259-260. 

 Agrilus egenus, 243. 

 Agrinonia mollis, 177. 

 Aizoacea;, 183. 

 Allionia nyctaginea, 171. 



238. 

 Alydus conspersus, 238. 



eurinus, 238. 



pilosulus, 238. 

 Amara cupreolata, 240. 

 AmaranthaceEe, 183. 

 Amblycorypha uhleri. 22 5, 2.- 

 Amblyteles nubivagus, 253. 

 Ambrosia(?), 249. 



artemisiaefolia, 187. 



bidentata, 208, 222. 23i. 



260. 



174. 183, 191, 



Ambrosia — continued. 



psilostachya, 159, 160, 161, 162, 163, 

 165, 166, 167, 169, 170, 174, 175, 

 176, 187, 191, 192. 

 Ambrosiacc;c, 187. 

 Amcnus. 339, 350. 



AmmocryptapelIuci(la.281 ,286, 294.298. 

 Ammodramus lecontcii, 334. 

 Ammophila, 225. 



arenaria, 192. 



argentata, 204, 255, 266. 



extremitata, 255. 



pictipennis, 255. 



procera, 2 55. 



vulgaris, 255. 

 Amorj)ha ranescens, 159, 163, 173. 178, 



ISO, 184. 191, 

 Ampelis cedrorum, 335. 

 Amphitornus bicolor. 202. 206, 222, 231. 

 Anacardiacea", 185. 

 AnacraI)o ocellatus, 256. 

 Anaphalis margaritacea, 188. 

 Ancistrocerus campcstris, 254. 

 Andropogon furcatus, 16S, 173, 181. 



scoparius, ISl . 

 Anemone cylindrica, 183, 191. 



virginiana, 17 7. 

 .Anisodactylus baltimorciisis, 242. 



carbonarius, 242. 



discoidcus, 242. 



piceus, 242. 



rusticus, 221, 242. 



verticalis, 242, 

 Anomala liinotata, 244. 

 Anomoglossus emarginatus, 241. 

 Anojilius atrox, 255. 



biguttatus, 255. 



cylindricus, 255. 



fuscipennis, 255. 



ingenuus, 255. 



