INDEX. 83 



Plutella amoracea — Continued. Page. 



habits 72-73 



insecticide experiments , 76 



life history 73 



occurrence in Colorado 71-72 



rearing records 73-75 



Plutella maculipennis — 



control by nicotine sulphate and whale-oil soap 10 



damaging cabbage in Hawaii '. . . 33 



on horse-radish 71 



Polistes hebrseus — 



enemy of Pontia rapse 7 



probable enemy of Hymeniajascialis ". . . 7 



Pontia protodice on horse-radish 71 



Pontia rapse — 



control by nicotine sulphate and whale-oil soap 10 



damaging cabbage in Hawaii 33 



on horse-radish 71 



prey of Polistes hebrseus 7 



Porizon macer. (See Temelucha [Porizon] macer.) 



Porosagrotis catenula, race of P. vetusta, distribution 51 



Porosagrotis satiens, race of P. vetusta, distribution . 50 



Porosagrotis vetusta — 



description 50 



distribution 50-51 



enemies 51 



injurious occurrence 47-49 



larva, description 50 



moth, description 50 



Portulaca oleracea — 



food plant of Hellula undalis 31 



food plant of Hymenia fascialis 2 



1 ' Powder gun, " use against sugar-beet web worm 66 



Purslane. (See Portulaca oleracea.) 



' ' Pussley , " colloquial name for Portulaca oleracea 31 



Radish, food plant of Hellula undalis 24, 27, 30, 32 



''Radish, Japanese, " food plant of Hellula undalis 31 



Ragweed. (See Ambrosia.) 



Rape, food plant of Hellula undalis 24, 30 



Rhopalosiphum dianthi damaging cabbage in Hawaii 33 



Rutabaga, food plant of Hellula undalis 30 



Salsola tragus, food plant of Loxostege sticticalis 59 



Scoparia alconalis, bibliographic reference 44 



Scoparia alconalis = Hellula undalis 28 



Screening a seed bed of cabbage in control of imported cabbage web worm 41, 42 



Shepherd's purse. (See Bursa [Capsella] bursa-pastoris.) 

 Soap — 



and kerosene against imported cabbage web worm 42 



whale-oil, and arsenate of lead against horse-radish web worm 76 



whale-oil, and arsenate of lead against imported cabbage web worm 40 



whale-oil, and nicotine sulphate against aphides 40 



whale-oil, and nicotine sulphate against beet army worm 10 



whale-oil, and nicotine sulphate against common cabbage worm 10 



whale-oil, and nicotine sulphate against diamond-back moth 10 



