36 INDEX TO CIRCULARS 1 TO 100. 
Oberea schaumii, ey, LOO DULUS MONIT CN ene s cae oases eceee 
Ochlerotatus abfitchii, distinctive characters of larva.................- 
estivalis, distinctive characters of larva................- 
atropalpus, distinctive characters of larva....-........-- 
aurifera, distinctive characters of larva ...............-- 
auroides, distinctive characters of larva............-...- 
bimaculatus, distinctive characters of larva............. 
canadensis, distinctive characters of larva.............-- 
cantator, distinctive characters of larva.............--.- 
CIN EN CODOTEDLISE Baas Nate see ee Oneeecesebieclee ees Cae 
COMPNMNALUS Haire MN: oho een asec sheen eee 
damnosus, distinctive characters of larva..............- 
dupreei, distinctive characters of larva...............--- 
fitchii, distinctive characters of larva.............-...-. 
impiger, distinctive characters of larva..............--- 
inconspicuus, distinctive characters of larva........-..- 
LOUIDILLO EUS ee ne nee ee eee he okinc eae ese eee 
lazarensis, distinctive characters of larva.....-......--- 
mitchellz, distinctive characters of larva...............- 
nivitarsis, distinctive characters of larva...........-..-- 
pretans, distinctive characters of larva..............-.-. 
pullatus, distinctive characters of larva.....-....--.---- 
punctor, distinctive characters oflarva......-..-.-.-.-- 
SCNT AUS terete ae syle einem elena erate meee ce eminine= 2 ace 
sollicitans, distinctive character of larva..............-. 
subcantans, distinctive characters of larva...........--- 
sylvestris, d istinctive characters of larva..............-- 
ECLTLOTYNCIUS ee ene cre eee ee so tkce thee S ce oe eee een 
trichurus, distinctive characters of larva.........-....-- 
triseriatus, distinctive characters of larva ..............- 
trivittatus, distinctive characters of larva ............... 
: varipalpus, distinctive characters of larva..........-.-- 
Ocneria dispar. (See Porthetria dispar.) 
Ohio, requirements relative to shipment of nursery stock..........- 
Oil (see also Kerosene and Petroleum). 
TESIGUiMeAeAINS HUOUSeMLyereees seas se eee sere eease ase ae eee ser 
washes and emulsions against San Jose scale...............----- 
Oil-water treatment against San Jose scale.................--------- 
Oilsiazainsi ped bup ce ase oe mane Sete orne Ley NS EE ee ele 
oxuwarble ss i. creceec. 28 the tet lcle-s2 cc ee ese Lee 
and carbolic acid against ox warble................-.-..---+--- 
Sulphunagaimstioxiwarplessscnssss. sss ce. aes sees 
Oklahoma, requirements relative to shipment of nursery stock... .. 
Okra, food plant of Aphis gossypii. .-- 2. --.---. 22-22-2222. - 22 soe 
DMrabroricaws-nuncrate= ese ee sees see eee eee 
Olive, food plant of Eulecaniwm nigrofasciatum..........-.-.------- 
Onion, food plant of Pegomya cepetorum..............-------------- 
PUSCICEDS 72S oa tine oS-n ec -eeeaeee es 
maggot. (See Maggot, imported onion.) 
imported. (See Maggot, imported onion.) 
thrips. (See Thrips tabaci.) 
Ononis natrix, food plant of Hylastinus obscurus...........---------- 
Ooencyrtus anasz, parasite of Anasa tristis ................-.--.----- 
Orange and other citrus fruits, food plants of Aphis gossypii........- 
aphis. (See Aphis gossypii.) 
white fly. (See Aleyrodes citri.) 
Orchard grass. (See Dactylis glomerata.) 
scolytus. (See Scolytus rugulosus.) 
treessanjury; bysperiodicaleicadae-.-aso--=2ose eee eens 
Oregon, requirements relative to shipment of nursery stock. .-.....-. 
Oriole, Baltimore, enemy of Ceratomiacatalpe..............--.----- 
Malacosoma americana.........-------- 
Ornamental plants, food of Macrodactylus subspinosus.......-..-..- 
OriheziannsignisiOnicoleus. -sAne wa aaeeen ee eee anes eens cape eeae 
Osage-orange, food plant of Pulvinaria innuwmerabilis........-..-.---- 
Pulvinaria. (See Pulvinaria maclure.) 
Otiorhynchus ovatus, mistaken for Anthonomus signatus as straw- 
berry pest in Rocky Mountain'rerionciacce oven ceecis ace ens -eenene 
Ovens, infestation by sae dad COMESHICO Rete cameree ee eriee ace esters 
Oxwarble. (See Hypodermalineata.) 
“wormal,’’ colloquial name for Hypoderma lineata.........-.-.-- 
P. 
Pachyneuronsp., parasite of A phis gossypii..............---+---+-+-+- 
Paleacrita vernata, generalaccount...........0..0-0022ee een eee ee eens 
TOM CIES Pee eels aise chine connwe © asiese nee eee eee 
Pan American Platypus. (See Platypus compositus.) 
Panaz victoriz, fumigation with hydrocyanic-acid gas............-.-- 
Pandanus veitchii, fumigation with hydrocyanic-acid gas........-.... 
37, rev. 2 
37, rev, 2 
