17 , 5 Oshima: Philippine Termites ' 499 
Gregor’s information, it attacks Eugenia jambolana and Leu- 
caena glauca, making large tunnels on their twigs. 
Genus ODONTOTERMES Holmgren 
Odontotermes mediodentatus sp. nov. Plate 1, fig. 4; Plate 3, figs. 
11 and 12; Plate 4, figs. 8 and 9. 
Imago. — Unknown. 
Soldier. — Head reddish yellow ; antennae and labial palpi 
yellow; mandibles dark reddish brown, proximal parts much 
paler; thorax, abdomen, and legs yellowish. Head sparingly 
pilose; thorax and abdominal tergites moderately covered with 
hairs, the latter with a series of short spiny hairs along the 
posterior borders. 
Head ovoid, sides very slightly converging anteriorly, pos- 
terior border rounded; no fontanelle; clypeus quadrilateral, not 
divided into two parts, posteriorly not separated from forehead, 
anterior border straight; labrum rather short, tongue-shaped, 
tip obtusely pointed, not reaching middle of mandibles, with no 
hyaline portion; mandibles rather slender, with incurved pierc- 
ing tip, the left with two triangular teeth, one at the center, 
the other at the proximal part, cutting margin of the right 
smooth; antennae 16-jointed, first joint cylindrical, exceedingly 
large, second joint longer than broad, nearly twice as long as 
third, fourth joint slightly longer than third, fifth joint subequal 
to third, other joints inverted-cone-shaped, apical joint oval; pro- 
notum saddle-shaped, narrower than head, anterior border en- 
tire, posterior border weakly incurved at middle; mesonotum 
slightly narrower than pronotum, posterior border bilobed ; me- 
tanotum broader than pronotum, posterior border straight; ab- 
domen rather short; styli 1-jointed. 
mm. 
Length of body 
5.00-6.00 
Length of head, with mandibles 
2.56-2.71 
Length of head, without mandibles 
1.65-1.87 
Width of head 
1.38-1.50 
Width of pronotum 
0.97-1.03 
Length of pronotum 
0.59-0.63 
Worker. — Head yellow, antennae and labial palpi somewhat 
paler; thorax and abdomen yellowish white. Head densely 
covered with delicate hairs ; thorax and abdominal tergites mod- 
erately pilose. 
Head orbicular, posterior border rounded, sides very slightly 
diverging anteriorly; Y-suture not present; postclypeus swollen, 
