170 The Philippine Journal of Science 1920 
abdomen, on each side, the anterior pairs apparently becoming 
modified into large hairs or setse, and the joint separating the 
eighth and ninth antennal segments is not so distinctly con- 
stricted as in other species of the genus. Each anal lobe bears a 
stout hair at least twice as long as the anal ring hairs. There 
appear to be four different types of glands present, large tubular, 
small tubular, large disk, and medium triangular, all of which 
are quite abundant, although not in the same numerical quan- 
FlG. 12. Phenacoccus hirsutus Green, adult female ; a, posterior apex of body, showing 
eerarii, glands, anal ring, apical setaa, and ventral chitinized area, X 115 ; b, tarsal claw, 
X 440 ; c, eerarian spine, X 640 ; rl to g, four different types of gland pores found on body, 
X 640 ; h, antenna, X 116. 
tity. The species as found in the Philippines occurs in abun- 
dance on the small twigs and leaves of its hosts, often in masses, 
and appears to form a matted sac, although the poor condition 
of all of the material studied prevents an accurate statement 
regarding the external appearance. I have examined specimens 
from the following lots of material: 
Luzon, Manila, on Hibiscus (coll. Compere 20172) : Bulacan 
Province, Baliuag, on Samanea saman (coll. Arce 2608) : Rizal 
Province, Alabang, on Hibiscus (coll. B. Duckworth 2566). 
Genus PSETTBOCOCCTJS Westwood 
This genus as used here includes some species which would 
need to be distributed to other genera in any revision of the 
