93 



415. Phenacoccus quercus (Doiigl). 



Pseudococcus quercus Dougl., Ent. Mon. Mag., xxvi, p. 154 (1890). 

 Phenacoccus " Ckll., Check List, p. 324 (1896). 



Habitat. — England. 



On Quercus robur. 



416. Phenacoccus rubivorus Ckll. 

 Phenacoccus rubivorus Ckll., Psyche, ix, p. 215 (1901). 



Habitat. — New Mexico. 



On roots of Rubus strigosus. 



417. Phenacoccus simplex King, 

 Phenacoccus simplex King, Ent. News, xiii, p. 42 (1902). 

 Habitat. — California. 

 On Atriplex. 



418. Phenacoccus socius (Newst.). 

 Pseudococcus socius Newst., Ent. Mon. Mag., xxviii, p. 144 (1892). 

 Phenacoccus " Ckll., The Entoni., xxxiii, p. 87 (1900). 



Pulvinaria ribesiae Dougl. (non Sign.), Ent. Mon. Mag., xxvi, p.[ 238 (iSc,o) 

 " " " " '■ '• " " xxviii, p. 219 (1892). 



Habitat. — England. 

 On black currant. 



419. Phenacoccus solenopsis Tins. 

 Phenacoccus solenopsis Tins., Can. Ent., xxx, pp. 47, 319 (1898). 



Habitat. — New INIexico. 



In nests of Solenopsis geminata Fab. 



420. Phenacoccus spiniferus Hemp. 

 Phenacoccus spiniferus Hemp., Rev. Mus. Paul., iv, p. 3^9 (1900). 



" " " Ann. Mag. N. H., (7), vii, p. no (1901). 



Habitat.— Brazil. 



421. Phenacoccus stachj'OS Ehrh. 

 Phenacoccus stachyos Ehrh., Can. Ent., xxxii, p. 314 (icco). 

 Habitat. — California. 

 On Stachyos bullata. 



422. Phenacoccus ulicis (Dougl.). 

 Pseudococcus ulicis Dougl., Ent. Mon. Mag., xxv, p. 88 (1SS8). 

 Phenacoccus " Ckll., Check List, p. 325 (1896). 

 Pseudococcus " Newst., Jn. Roy. Hor. Soc, xxiii,fp. 29(1900). 



Habitat. — Europe. 

 On Furze; Laburnum. 



423. Phenacoccus ulmi (Dougl.). 



Pseudococcus ulmi Dougl., Ent. Mon. Mag., xxv, p. 124 (1888). 

 Phenacoccus " Ckll., Check List, p. 325 (1896). 



Habitat. — Europe. 



On Ulmus campestris. 



