INDEX. 
: A. Botryococecus, 246. 
' Abbott, 211, 216, 218. Brimley, 150. 
_ Abedus, 142. Britton, 149. 
 Aldrovandi, 13, 158, 190. Brocher, 16, 43, 44, 94, 117, 157, 160. 
Alexander, 50. 180, 236. 
| Alge, 24, 101, 137, 242, 244, 248. Buenoa, 30, 32, 35, 41, 42, 178, 177. 
Alisma, 160. Buenoa albida, 175, 175. 
Ameeba, 247. Buenoa carinata, 174. 
Ambrysus, 198. Buenoa elegans, 174, 176. 
Ambrysus californicus, 199, 204. Buenoa, Key to species, 173. 
Ambrysus cireumcinctus, 199, 201. Buenoa margaritacea, 33, 174, 175, 194. 
Ambrysus guttatipennis, 200, 208. Buenoa plotycnemis, 174, 176. 
 Ambrysus heidemanni, 199, 205. Eee iat aie ae ee 
_ Ambrysus, Key to species, 198. 116, 117, 118, 135, 137, 139, 144, 145, 
Ambrysus melanopterus, 199, 203. N54 155; Vote ES 81605) 164,180 185. 
= Ambrysus mormon, 199, 202. 208, 209. 
Ambrysus puncticollis, 199, 203. Bugnion and Popoff, 238. 
Ambrysus pudicus, 199, 204. SES 
Ambrysus pulchellus, 198, 200. Butler, 101. 
Ambrysus pulchellus var. pallidulus, €. 
198, 200. 
Ambrysus signoreti, 200, 202. 
Amyot & Serville, 15. 
Ankistrodesmus, 246. 
Arcella, 247. 
Arctocorixa, 211, 212, 215. 
_ Aretorixa alternata, 27, 229. 
Arrows, 92. 
Auhauhtli, 37. 
Axayactl, 37. 
Callibeetes, 161. 
Callicorixa, 211, 212. 
Cambarus immunis, 216. 
Capsids, 50. 
Caraphractus cinctus Walker, 32. 
Carmine feeding experiment, 241. 
Cattail 24, 26, 33, 34, 93, 103, 244. 
Ceratophyllum, 208. 
Chalcidide, 32, 101. 
Champion, 46, 51. 
; B. Chara, 177, 184. 
__ Back swimmer, 24, 32. Chiloxanthus, 55, 59. 
Back swimmers (see Notonectide). : Chiloxanthus stellata, 59. 
Barber, 51. 4 ; Chironomus, 248. 
Bastin, 38. Chlorophyll, 35, 228. 
_ Batrachidea, 50. Chlamydomonas, 247. 
Beamer, 106, 208. Cieadellids, 34. 
Belostoma, 30, 144. Comstock, 228. 
Belostoma flumineum, 144. Conferva, 235. 
Belostmatide, 8, 11, 12, 13, 23, 30, 35, Corixa, 211, 212. 
40, 44, 141. Corixa orivara, 235. 
Belostomatide, Biology of, 142, 151. Corixide, 8, 11, 23, 24, 26, 31, 32, 34, 35, 
Belostomatidsw, Key to genera, 141. 41, 43, 44, 96, 178, 180, 182, 186, 190, 
_ Benaeus, 30, 150. 193, 197, 210. 
 _ Benacus griseus, 150. Corixide, biology of, 215. 
Blanchard, 15. Corixidw, Key to genera, 211. 
Bilasturus, 161. Corixid eggs, 25. 
es Boatmen (see Corixide). Corixids as food, 37, 
Bog moss, 33. Cosmarium, 246. 
_ Borner, 211, 238, | Crambus, 101. 
Ps 
(337) 
22—Sci. Bul.— 1669 
