INDEX. 47 



Page. 

 Robinia pseudacacia, food plant of alfalfa weevil ..». ..-«... 24 



Robin, western. (See Planesticus migratorius propinquus.) 

 Salamander. (See Ambly stoma sp.) 



Sayornis sayus, enemy of alfalfa weevil 40 



Sheep, pasturing as remedy against alfalfa weevil 12 



Sparrow, Brewer's. (See Spizella breweri.) 



desert song. (See Melospizamelodiafallax.) 



English. (See Passer domesticus.) 



western chipping. (See Spizella socialis arizonse.) 



lark. (See Ckondestes grammacus strigatus.) 

 savannah. (See Passerculus savannarum alaudinus.) 

 vesper. (See Pocecetes gramineus confinis.) 

 white-throated. (See Zonotrichia albicollis.) 

 Spider plant. (See Cleome serrulata.) 



Spiders, enemies of alfalfa weevil 33 



Spizella breweri, enemy of alfalfa weevil 40 



socialis arizonse, enemy of alfalfa weevil 40 



Steganopus tricolor, enemy of alfalfa weevil 40 



Stelgidopteryx serripennis, enemy of alfalfa weevil 40 



Sturnella neglecta, enemy of alfalfa weevil 40 



Swallow, rough- winged. (See Stelgidopteryx serripennis.) 



Sweeper, street, against alfalfa weevil 27-28 



Sweet pea. (See Lathyrus odoratus.) 



Thrasher, sage. (See Oreoscoptes montanus.) 



Toad, Rocky Mountain. (See Bufo lentiginosus ivoodhousei.) 



Towhee, green-tailed.' (See Oreospiza chlorura.) 



Trifolium hybridum, food plant of alfalfa weevil 24 



pratense, food plan;t of alfalfa weevil 24 



repens, food plant of alfalfa weevil 24 



Trigonellafcenumgrsecwn, food plant of alfalfa weevil 24 



Tyrannus verticalis, enemy of alfalfa weevil 40 



Vetch, hairy or winter. (See Vicia villosa.) 

 narrow-leaved. (See Vicia sp.) 

 obtuse-leaved. (See Vicia sp.) 

 spring. (See Vicia sativa alba.) 

 Utah milk. (See Astragalus utahensis.) 



Vicia atropurpurea eaten by alfalfa weevil 24 



dispema eaten by alfalfa weevil 24 



sativa alba eaten by alfalfa weevil 24 



sp. , food plant of alfalfa weevil 24 



villosa eaten by alfalfa weevil , 24 



Weevil, alfalfa. (See Alfalfa weevil.) 

 Wilson's phalarope. (See Steganopus tricolor.) 



Wire brush against alfalfa weevil - 27-28 



Xanthocephalus xanihocephalus, enemy of alfalfa weevil 40 



Zamelodia melanocephala, enemy of alfalfa weevil 40 



Zenaidura macroura carolinensis, enemy of alfalfa weevil 40 



Zonotrichia albicollis, enemy of alfalfa weevil 40 



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