INDEX. 



A. 



Abbott, 211, 216, 218. 



Abedus, 142. 



Aldrovandi, 13, 158, 190. 



Alexander, 50. 



Algre, 24, 101, 137, 242, 244, 248. 



Alisma, 160. 



Amoeba, 247. 



Arabrysus, 198. 



Amhrysus californicus, 199, 204. 



Avibrysus circumcinctus, 199, 201. 



Amhrysus guttatipennis, 200, 203. 



Amhrysus heidemanni, 199, 205. 



Ambrysvis, Key to species, 198. 



Amhrysus melanopterus, 199, 208. 



Amhrysus mormon, 199, 202. 



Amhrysus puncticollis, 199, 208. 



Ainbrysus pudicus, 199, 204. 



Amhrysus pulchellus, 198, 200. 



Amhrysus pulchellus var. pallidulus, 



198, 200. 

 Amhrysus signoreti, 200, 202. 

 Amyot & Serville, 15. 

 Ankistrodesmus, 246. 

 Arcella, 247. 



Arctocorixa, 211, 212, 215. 

 Arctorixa alternata, 27, 229. 

 Arrows, 92. 

 Auhauhtli, 37. 

 Axayactl, 37. 



Back swimmer, 24, 32. 



Back swimmers (see Notonectidee) . 



Barber, 51. 



Bastin, 38. 



Batrachidea, 50. 



Beamer, 106, 208. 



Belostoma, 30, 144. 



Belostoma flumineum, 144. 



Belostmatidse, 8, 11, 12, 13, 23, 30, 35, 



40, 44, 141. 

 Belostomatida), Biology of, 142, 151. 

 Belostomatida?, Key to genera, 141. 

 Benacus, 30, 150. 

 Benacus griseus, 150. 

 Blanchard, 15. 

 Blasturus, 161. 

 Boatmen (see Corixidae). 

 Bog moss, 33. 

 Borner, 211, 238. 



Botryococcus, 246. 



Brimley, 150. 



Britton, 149. 



Brocher, 16, 43, 44, 94, 117, 157, 160. 



180, 236. 

 Buenoa, 30, 32, 35, 41, 42, 173, 177. 

 Buenoa albida, 175, 175. 

 Buenoa carinata, 174. 

 Btienoa elegans, 174, 176. 

 Buenoa, Key to species, 173. 

 Buenoa margaritacea, 33, 174, 175, 194. 

 Buenoa plotycnemis, 174, 176. 

 Bueno, 15, 36, 40, 43, 46, 92, 93, 95, 96, 



116, 117, 118, 135, 137, 139. 144, 145, 



154, 155, 157, 159, 160, 161, 180, 183. 



208, 209. 

 Bugnion and Popoff, 238. 

 Burmeister, 15. 

 Butler, 101. 



C. 



Callibffites, 161. 



CallicorLxa, 211, 212. 



Camharus immunis, 216. 



Capsids, 50. 



Caraphractus cinctua Walker, 32. 



Carmine feeding experiment, 241. 



Cattail 24, 26, 33, 34, 93, 103, 244. 



Ceratophyllum, 208. 



ChalcididK, 32, 101. 



Champion, 46, 51. 



Chara, 177, 184. 



Chiloxanthus, 55, 59. 



Chiloxanthus stelluta, 59. 



Chironomus, 248. 



ChlorophyU, 35, 228. 



Chlamydomonas, 247. 



Cicadellids, 34. 



Comstock, 228. 



Conferva, 235. 



Corixa, 211, 212. 



Corixa orivara, 235. 



Corixidfe, 8, 11, 23, 24, 26, 31, 32, 34, 35, 



41, 43, 44, 96, 178, 180, 182, 186, 190, 



193, 197, 210. 

 CorixidsB, biology of, 215. 

 Corixidas, Key to genera, 211. 

 Corixid eggs, 25. 

 Corixids as food, 37. 

 Cosmarium, 246. 

 Crambus, 101. 



22 — Sci. Bui. — 1669 



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