i7 , 2 Morrison: Philippine Nondiaspine Coccidx 171 
group, but is substantially as it is constituted in the Fernald 
Catalogue. It is characterized chiefly by having the antennae 
normally 8-segmented or less, by the absence of a claw on the 
denticle, and by the usually well-developed cerarii. I have 
examined specimens of five species from the Philippines. 
Key to the Philippine species of Pseudococcus. 
a 1 . Margin of body segments dorsally with a varying number of large, 
tubular glands, and with a dorsal median pair on most of the seg- 
ments, each of these opening into a heavily chitinized plate bearing 
several hairs, these glands most numerous on the caudal abdominal 
segments and near the antennae; with only an apical pair of cerarii; 
secretionary covering of female with glassy threads in it. 
P. virgatus ( Ckll. > . 
a 1 . Without such prominent tubular glands, but often with smaller in- 
conspicuous tubular glands present; cerarii more numerous in most 
species. 
b\ With the three or four abdominal segments anterior to the anal ring 
with a long slender seta on each margin, all of these approach- 
ing in length those found on the anal lobe segment; body large, 
plump, legs and antennae short and stout; cerarii wanting except 
on the posterior abdominal segments P. sacchari (Ckll.). 
b 2 . With such large setae only on the anal lobes. 
P. With dorsal lanceolate spines; cerarii poorly developed, the spines 
lanceolate, and those anterior to the last four or five pairs widely 
separated and without grouped trilocular pores; antennae nor- 
mally 7-segmented, short and stout, as are the legs; female very 
plump, inclosed in a more or less distinct white secreted sac. 
P. filamentosus (Ckll.). 
P. Without dorsal spines, although sometimes with rather stout hairs; 
cerarii all well developed, the conical spines surrounded by a 
varying number of trilocular gland pores; antennae normally 8- 
segmented; female not inclosed in a sac. 
d 1 . Ventral chitinized area on anal lobes irregularly quadrate; anal 
lobe hair only a little longer than anal ring hair; the penul- 
timate or antepenultimate, and some of the anterior cerarii 
usually with three or even more spines in each cerarius. 
P. bromeliae (Bouche). 
d 2 . Ventral chitinized area on anal lobes linear; anal lobe hair about 
twice as long as anal ring hair; abdominal segments with only 
two spines in each cerarius P. lilacinus Ckll. 
Pseudococcus virgatus (Ckll.). Plate 1, fig. 7. 
Pseudococcus virgatus (Cockerell), Robinson, Philip. Journ. Sci. § D 
12 (1917) 6. 
Pseudococcus virgatus (Cockerell), variety, Proc. Dav. Acad. Sci. 10 
(1905) 130; Robinson, Philip. Journ. Sci. § D 12 (1917) 7. 
A careful examination of the type material of P. virgatus, 
variety, fails to show any characters that would definitely dis- 
tinguish the so-called variety from the species, and the suggestion 
