235 



2. Antennae eioht-jointed, margin of Ixxiy beset with 

 projecting tubercules, bearing a number of stout short 

 spines. Tylococcus Newst. 



3. Antennae eight-jointed. Body nsually longer than 

 three times its width. Mentnm short. Tarsus half 

 as long as tibia. Tr'ionymus Berg, 



4. Antennae six-jointed. Caudal lobes well developed, 

 each bearing a chitinous tooth or hook. Adult female 

 enclosed in a brittle powdery white sac. 



Geococcus Green. 



5. Antennae six-jointed. Adult female secreting much 

 white meal or cotton. Caudal lobes not conspicu- 

 ous. Rlpersia Sign. 



E, Adult female active. Dorsum thickly covered with fine 

 hair, appearing glassy. Caudal lobes as in Pseudococcus 

 with slender setae. Antennae seven- jointed (many indi- 

 viduals show only six joints). Derm with rows of large 

 round pores on each segment, forming groups at margin. 

 Anal ring with six hairs. Nesococcus n. g. 



Synopsis of Species. 



Genus Asterolecanium Targ. 



Ovisac of female broadly oval. Margin with well-developed 

 fi'inge. hamhusae Boisd. 



Ovisac of female much narrower, decidedly elongate, cari- 

 nated in the middle, attenuated at caudal end of body. In- 

 festing bamboo. miliaris Boisd. 



Ovisac of female circular, usually depressed in the bark of 

 plants, marginal fringe well developed. Infesting oleander, 

 Hg and many other plants. pustulans Ckll. 



Genus Eriococcus Targ. 



Adult female yellowish brown, enclosed in a closely felted 

 Mhite sac. Antennae and legs well developed. Anal ring with 

 eight hairs. Infesting Araucaria species. araiicariae Mask. 



