18 



THE CALIFORNIA RED SCALE. 



Chrysomphalus aurantii Mask. 



(Food plants: Agave, apple, fig, grape, lemon, orange, pear, plum, 

 quince, willow, etc.; formerly Aspidiotus.) 



For bibliography and food plants see Fernald, Cat. Coccidse of 

 World, Bui. 88, Mass. Agr. Coll., pp. 287-288, 1903; Marlatt, 

 Yearbook, U. S. Dept. Agric, 1900, p. 268, 1901. 



Exhibit: Infested twig and figure. 



GLOVER'S SCALE; LONG SCALE. 



Lepidosaphes gloveri Pack. 

 (Food plants: Lime, magnolia, orange, palms; formerly Mytilaspis.) 

 For bibliography and food plants see Fernald, Cat. Coccidse of 



World, Bui. 88, Mass. Agr. Coll., pp. 309,1903; Marlatt, Yearbook, 



U. S. Dept. Agric, 1900, p. 265, 1901. 



Exhibit: Infested twig, figures, and the following enemies: Chilo- 



corus bivulnerus Muls., C. cacti Linn., Coccinella abdominalis Sa} 7 , C. 



calif omica Mann., O. sanguinea Linn., C. oculata Fabr., Dakruma 



coccidivora Comst., Exochoimis contristatus Muls., Hippodamia 



ambigua Lee, II. convergent Guen., Hyperaspidius coccidivora Ashm., 



Scymnus bioculatus Muls. , jS. cervicalis Muls. 



OYSTER-SHELL BARK-LOUSE. 



Lepidosaphes ulmi Linn. 



(Attacks principally apple, currant, Cornus, cottonwood, lilac, pear, 

 sassafras, etc.; formerly called Mytilaspis pomorum Bouche.) 



For bibliography and food plants see Fernald, Cat. Coccidse of 

 World, Bui. 88, Mass. Agr. Coll., pp. 314-317, 1903. 



Exhibit: Infested twig and figure. 



THE PURPLE SCALE. 



Lepidosaphes beckii Newm. 



(Food plants: Citron, fig, lemon, oak, orange; formerly known as 

 Mytilaspis citricola Glov.) 



For bibliography and food plants see Fernald, Cat. Coccidae of 

 World, Bui. 88, Mass. Agr. Coll., pp. 305-306, 1903; Marlatt, Year- 

 book, U. S. Dept. Agric, 1900, p. 261. 



Exhibit: Infested twig and figure. 



THE CHAFF SCALE. 



Parlatoria pergandei Comst. 



(Food plants: Japonica, lemon, orange.) 



For bibliography and food-plants see Fernald, Cat. Coccidse of 

 World, Bui. 88, Mass. Agr. Coll., pp. 319-320, 1903; Marlatt, Year- 

 book, U. S. Dept. Agric, 1900, p. 270. 



Exhibit: Infested twigs and figure. 



