Index 



Masariella, 375, 389, 398-400; key to 

 species of, 399-400. 

 alfkeni, 399, 400. 

 saussurei, 399, 400. 

 Masarinae, key for genera of, 381- 



382. 

 Masaris, 375, 389, 398, 400, 405-406; 

 species of, 406. 

 aegyptiacus, 406 

 alfkeni, 399. 

 apiformis, 403. 

 occidentalis, 407. 

 texanus, 414. 

 vespiformis, 369, 406. 

 vespoides, 412. 

 Mealybugs (Hvmenoptera), parasites 



of, 347-367. 

 Megascopteridae, ancient insect group, 



venation in wings of, 89-90. 

 Melianthus major, host for Rhopalo- 



siplium persicae, 332. 

 Metaparagia. 393; species of, 393; 



key to, 393. 

 Mezira nioesta, 234. 

 Microphylellus alpinus, 242. 

 bicinctus, 243. 

 modestus, 242 

 rubricans, 242. 

 Microptervx, 139. 

 Midas, 133. 



Miridae, North American, keys to 

 genera of, 199-216; explanation 

 of terms, 200-201. 

 Mischocyttarus, wing of, 375. 

 Monterey pine, host for Chermes 



cooleyi, 346. 

 Mosquito. See Ephydridae. 

 Myzaphis abietina, 342. 



rosariini, 342. 

 Myzocallis arundicolens, 305-310. 

 arundinariae, 302, 303, 306. 

 castaneae, 323-324. 

 coryli, 324. 

 essigi, 324. 

 pasaniae, 324. 

 quercus, 324. 

 ulmifolii, 324. 

 woodworthi, 324. 

 Myzus aquilegiae, 314-317. 

 cerasi, 333, 334. 

 circumfiexum, 335. 

 fragaefolii, 335. 

 varians, 334, 335. 

 Nabis ferns, 235. 

 Nasturtium, host for Ehopalosiphum 



persicae, 331. 

 Nectarosiphnm rubicola, 327-328. 

 Nemura trifasciata, 104. 

 Neomexicanus, 415. 

 Neoptera, venation in wings of, 129- 



142. 

 Nephrolepis (Boston ferns), host for 

 Idiopterus, 329. 



Neuroptera, fossil form, type of vena- 

 tion in wings of, 85. 

 New Genera and Species of Encyrt- 

 inae from California Parasitic in 

 Mealybugs (Hymenoptera), 347- 

 367. 

 New or Little Known Genera and 

 Species of Orthotylini (Hemip- 

 tera), 217-227. 

 Noltea africana (soap bush), host for 



Aphis ceanothi, 338. 

 Notes on Some Hemiptera Taken 

 near Lake Tahoe, California, 

 229-249. 

 Notophila bellula, 153. 

 scalaris, 160. 

 varia, 153-1.54. 

 virgata, 160. 

 Nysius californicus, 234. 

 ericae, 234. 

 ericaei minutus, 234. 

 Odonata, venation in wings of, 92- 



97. 

 Odynerns, 371, 378. 

 Oenothera biennis, host for Aphis 

 oenotherae, 341. 

 grandiflora, 341. 

 Okanagana ornata, 245. 



rimosa, 245. 

 Oleander, host for Aphis nerii, 340, 



341. 

 Oliarus tidus, 247. 



011a abdominalis, 252, 274-279, 293, 

 294, passim. 

 oculata, 252, 279-283, 293, 294, 29.5, 

 jmssim. 

 Oncopsis pruni, 248. 



viriabilis, 248. 

 Orgerius rhyparus, 245. 

 Orthoptera,' 119-120. 

 Orthopteroidea, fossil insects, vena- 

 tion in wings of, 112-113. 

 Orthotylini, 217-227. 

 Orthotylus aflfinis, 241. 

 conipsus, 217. 

 cuneatus, 242. 

 formosus, 241. 

 insignis, 241. 

 ovatus, 241. 

 tibialis, 241. 

 uniformis, 241. 

 viridicatus, 241. 

 Paleopterin.i, venation in Avings of, 



102-103. 

 Paleozoic, insect fossils of, 7, 8, 9, 85, 

 86, 88, 89, 97, 102, 103, 104, 105, 

 106, 108, 111, 119, 120, 129. 

 Palephemeridae, Devonian remains, 



venation in wings of, 98. 

 Panorjjidae, venation in wings of, 



109-110. 

 Papaver (garden poppy), host for 

 Aphis rumicis, 341. 



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