50 The Philippine Journal of Science 1921 
(Bugnion and Popoff) and in venation like those of P. inopinatus 
Silvestri but extremely variable. Median and cubitus more 
or less completely united in anterior wing, tending to separate 
and reunite, forming a closed cell; median of hind wing often 
arising from radial sector or from branches from both radial 
sector and cubitus. Radial sector thickened, particularly in 
outer third of each wing, and united with the costa by 8 or 9 
short, thick, cross veins. All veins marked externally by tiny 
papillse. Gula much broader than long, rounded posteriorly. 
Toothing of mandible like that of P. japonicus and P. inopinatus, 
not like that of P. flavus. 
Soldier. — Large soldier with long head converging distinctly 
anteriorly, somewhat like P. flavus but with much longer body 
and longer maxillary palpi. Antennae of 18 or 19 segments. 
Head with mandibles, 2.75 to 3 millimeters long; head width, 
1.50 to 1.65 millimeters. Small soldier with head 2.50 milli- 
meters long with mandibles, and about 1.40 millimeters wide. 
DESCRIPTIONS 
Adult. — Head, body, and legs yellow shading into brown in 
older individuals; head, base and anterior border of wings 
and posterior abdominal tergites often smoky. Wings diapha- 
nous with the exception of costa and radial sector which are a 
grayish yellow becoming smoky near the base. Body more or 
less rounded, which, together with its light color and diaphanous 
wings, gives this termite an appearance quite different from that 
of most adult termites; 8 millimeters long, with wings 11 to 
12 millimeters long, anterior wing 9 millimeters long. Head 
broadly egg-shaped, somewhat flattened behind and narrowed 
in front, slightly longer than broad (1.55 by 1.40 millimeters) ; 
posterior border rounded, surface flattened, slightly concave. 
Fontanelle small but distinct, frons incompletely delimitated, 
rising to meet the much-swollen postclypeus which is distinctly 
divided in the midline; postclypeus more than twice as broad 
as long and showing in front of fontanelle a shallow channel 
outlined in dark brown; anteclypeus small, white, four times 
as broad as long; labrum large, Swollen, with four apical hairs 
in two lateral pairs ; labrum a little longer than clypeus. Ocelli 
very near the compound eyes, small, indistinct, hyaline, an 
elongated oval, long axis nearly parallel to long axis of head. 
Antennae with 18 to 21 joints, first large, cylindrical, heavily 
chitinized, second shorter, narrow and cylindrical, third and 
fourth smallest, disk-shaped, the others orbicular to broad-oval 
