238 



Genus Tylococcus Newst. 



Adult female viviparous, pink or pinkish brown, thickly 

 (■o\ered with white powdery secretion, not hiding segmenta- 

 tion. Margin of body beset with long, coarse, white filaments, 

 17 on each side. Derm after treatment shows marginal tu- 

 bercles each with a number of conical spines. Anal ring with 

 six hairs. Antennae as in Pseudo coccus. Infesting Pandanm 

 ocloratissimus. giffanli n. sp. 



Genus Trionymus Berg. 



Adult female oviparous, of a dark pink color, slightly cov- 

 ered with white powdery secretion, not hiding color nor seg- 

 mentation. Antennae 8- jointed, short and stout. Eggsac 

 longer and broader than body of female. Infesting grasses. 



insularls n. sp. 



Genus Geococcuf< Green. •_ 



Adult female oviparous, pale honey yellow, broadly fusi- 

 form, surrounded by whorls of fine, glassy hair. Forms a 

 brittle, powdery white sac. Attacking the roots of trees and 

 pliints. radicum Green.; 



Genus Ripersia Sign. 



Adult female viviparous, pale reddish brown, thickly cov- 

 ered with white mealy secretion hiding segmentation. Anten- 

 nae six-jointed. llargin of body wdth thick, white, waxy 

 tufts, which often coalesce. Infesting a variety of palms. 



palmarum n. sp. 



Genus Nc.sococciis n. g. 



Adult female active. Dorsum thickly covered with fine ¥ 

 hair, appearing glassy. Antennae seven-jointed (many indi- 

 viduals show only six joints). Legs short and stout, espe- 

 cially femur. Derm when cleared shows rows of large round 

 pores on each segment of the l)ody, these forming groups at 

 i.iargin. Caudal lobes as in Pseudo coccus with slender setae. 

 Anal ring with six hairs. 



