INDEX 



XI 



nubilus (Pachybrachys) 



312, 316, 444 

 nunenmacheri (Pachybrachys) 



Fall 314,372 



Obfuscatus (Pachybrachj^s) Fall 



319,416 

 obsoletus (Pachybrachys) 



320, 440, 480 



occidentale (Xiphidmm) 191 



occidentaHs (Conocephalus)163, 191 



Ocha gorgas Schaus 7 



ochreata (Trochuda) Schaus. . . 7 



ochrida (Prumala) Schaus 2 



ochrotelus (Conocephalus) Rehn 



and Hebard 233,283 



Octogonotus later alis Bo wditch . 502 



plagiatus Bowditch 501 



similis Bowditch 502 



Omototus 487 



Opeastyliis Rchn and Hebard 



226, 229, 239 



OrcheUmiim 12 



(key to species) 24 



agile 24,27,29 



bradleyi Rchn and Hebard 



20, 73 



bruneri 72 



bullatum Rehn and Hebard 



25, 27, 50 

 calcaratum Rehn and Heb- 

 ard 24,27,46 



campestre 60 



concinnum 25, 27, 60 



crusculum 68 



cuticulare 12, 16, 19, 34, 58 



dehcatum 60 



erj'throcephakim 34 



fidicinium 25, 27, 08 



fratemum Rehn and Heb- 

 ard 2(), 79 



glabcMTimum 



12, 16, 19, 24, 27, 34, 76 



glaucum 16, 29 



gladiator 24, 26, 44 



gracile 15, 60, 170 



herbaceum 16, 68 



indiancnse 60 



Orchelimum inerme 17 



laticauda 17, 18, 25, 27, 53 



longipennis 60 



longipenne 50 



manitobense 44 



militare 25, 26, 70 



minor 25, 27, 58 



molossum 29 



nigripes 25, 27, 56 



nitidum 17, 18 



ortoni 243 



pulchellum 53 



robustum 17 



senegalensc 13 



silvaticum 29 



spinulosum 17, 18 



superbum Rehn and Heb- 

 ard 25,26,76 



unispina 25, 81 



vahdum 17 



volantum 19,26,72,73 



vulgare 24,27,38 



oregonensis (Aphis) Wilson ... 88, 92 

 oregonensis (Lachnus) Wilson. 103 

 oregonensis (Microsiphuni) Wil- 

 son 88, 91 



ortoni (OrcheUmum) 243 



osceola (Pachybrachys) Fam\<d, 428 

 othonus (Pachybrach3^s) 



322, 456, 480 



Pachj'brachys 300 



(key to North American 



species) 308 



abdominahs 313, 353 



alacrisFoW 314,366 



2i\iico\a. Fall 321,442 



analisFa/Z 309,331 



aqiiilonisFaM. . . .315, 375, 480 



arizonensis 311, 344 



atomarius 319, 325, 413, 480 



autolycus T^aH 322, 458 



badiusfV/« 318,404 



bajulus 318,408 



bivittatus 322, 447, 480 



brevicoUis 317, 393 



brevicornis Fall 320, 380 



brunneus 309, 335 



