257 



A CONTEIBUTION TO THE CLASSIFICATION OF THE 



COCCID^. 



By T. D. a. Cockerell. 



(Concluded from p. 233.) 



Walkeriana, Signoret. 



Walkeriana, Signoret, Ann. Soc. Ent. France, 1875, p. 890. 

 Type, floriger. 



2 . More or less covered with dense waxy lamellae ; auteiinffi 

 10-jomted. 



Species. — W. floriger, Walker, W. compacta, Green, W. euphor- 

 bia, Green, IF. jjolei, Green, and W. senex, Green, Ceylon. 



W. pertinax, Newstead, and W. andrece, Green, Central Africa. 



Section^sj>i(Zo^?-ocii(s,Newstead,P.Z.S., 1900, p. 948. Female. 

 Genital opening covered by a flap ; waxy processes small, not 

 covering body. IF. pertinax. 



leery a, Signoret. 



Icerya, Signoret, Ann. Soc. Ent. France, 1875, p. 351. Type, 

 seychellarum. 



Proticerya, Cockerel!, Psyche Suppt., 1895, p. 15. Type, 

 rileyi. 



Crossotosoma, Douglas, Ent. Mo. Mag. March, 1890, p. 79. 

 Type, cegyptiaca. 



? . Soft, with a long (usually ribbed) posterior ovisac ; antennas 

 typically 11-jointed. 



(?. Without caudal processes. 



Species. — I. seychellarum, Westw., islands of Indian Ocean ; 

 I. natalensis, Douglas, Natal ; I. albolutea, Ckll., W. Africa ; I. 

 formicarum, Newstead, India ; I. cegyptiaca, Douglas, Egypt, 

 Ceylon ; I. tangalla, Green, Ceylon ; I. crocea, Green, Ceylon ; 

 I. pilosa. Green, Ceylon ; I. purchasi, Maskell, Australia, &c. ; 

 I. koehelei, Maskell, Australia. 



I. hrasiliensis, Hempel, Brazil ; I. schrottkyi, Hempel, Brazil ; 

 1. montserratensis, Eiley-Howard, West Indies ; I. palmeri, Eiley- 

 Howard, Mexico; I. rileyi, Ckll., New Mexico; I. littoralis, Ckll., 

 Mexico. 



Section Proticerya, Ckll. Female antennae 9- to 10-jointed. 

 I. rileyi, I. littoralis. 



Margarodin^. 

 Margarodes, Guilding. 



Margarodes, Guilding, Trans. Linn. Soc. Lond. xvi. (1829), 

 p. 115 ; Giard, C. R. Soc. Biol. Feb. 10th, 1894, p. 412. Type, 

 formica7'U7n. 



Porphyrophora, Brandt, Mem. Ac. St. Petersb. 1834, 1835. 



