17, 5 Oshima: Philippine Termites 507 
+ 
Head cylindrical, sides very slightly converging anteriorly, 
posterior border rounded; forehead abruptly inclined, more or 
less concave, with a shallow median groove; the vertical part of 
Y-suture deeply colored; fontanelle small; antenne 14-jointed, 
basal joint cylindrical, exceedingly large, second joint quadri- 
lateral, slightly shorter than third, fourth joint the shortest, 
much shorter than second, fifth to thirteenth joints elongate, 
club-shaped; anteclypeus quadrate, nearly as long as broad; 
postclypeus considerably shorter than the former, distinctly sep- 
arated from forehead; labrum short, asymmetrical, much en- 
larged anteriorly, anterior border nearly straight, provided with 
a few long hairs, left anterolateral corner sharply pointed, 
the right obtusely rounded; mandibles asymmetrical, the right 
shorter and straighter, with an outcurved piercing tip, the left 
much bent, S-shaped, the basal third directed inward, the outer 
margin becoming gradually the upper, the middle third bending 
quickly outward, the apical third directed forward, the upper 
margin becoming again the outer, the tip obtusely pointed; gula 
elongate, narrow, much enlarged anteriorly, lateral borders 
concave; pronotum saddle-shaped, much narrower than head, 
anterior border rounded, posterior border obscurely bilobed; 
mesonotum narrower than pronotum, metanotum nearly as 
broad as pronotum; styli 1-jointed; hind legs slender, reaching 
beyond tip of abdomen. 
mm. 
Length of body 5.50-6.00 
Length of head, with mandibles 4.00—4.20 
Length of head, without mandibles 2.20—2.30 
Width of head 1.20 
Width of pronotum 0.75—0.87 
Worker.—Head yellow, antennze somewhat paler; abdomen 
milk-white. Head sparingly pilose; abdominal tergites mod- 
erately covered with minute hairs. . 
Head spherical, Y-suture and fontanelle obscure; antennz 
14-jointed, second and third joints subequal in length, slightly 
shorter than fifth, fourth joint the smallest, nearly half as long 
as fifth; pronotum much narrower than head, saddle-shaped, 
anterior border rounded. 
mm, 
Length of body 4.50 
Width of head 1.00 
Width of pronotum 0.56 
