xv, 4 Oshima: Formosan Termites 323 
mandibles; antennae 17-jointed, second to fourth joints equal in 
length; pronotum semilunar, anterior border bilobed, posterior 
border clearly indented at middle, anterolateral corners rounded ; 
mesonoturn and metanotum much broader than pronotum, their 
posterior borders nearly straight, their posterolateral corners 
strongly projected posteriorly, forming rudimental wing pads; 
abdomen more or less enlarged, chitinous plates crescent-shaped. 
Measurements of the substitute queen. 
mm. 
Length of body 
12.00 
Length of abdomen 
9.00 
Width of abdomen 
3.50 
Length of head 
1.25 
Width of head 
1.34 
Width of pronotum 
1.25 
Length of pronotum 
0.78 
Substitute king. — Unknown. 
Soldier . — Head yellow; mandibles dark brown; labrurn brown- 
ish yellow; antennae somewhat paler; pronotum pale yellow; 
abdomen and legs pale straw color; head coarsely pilose; tho- 
racic plates hairy ; abdominal tergites densely covered with short 
spiny hairs. 
Head suborbicular, posterior border rounded, sides arcuate, 
strongly converging anteriorly ; fontanelle distinct, opening 
directed forward, situated just behind the base of postclypeus; 
antennae 15-jointed, second joint quadrate, longer than third, 
the latter narrowest and shorter than fourth; mandibles saber- 
shaped, slender, with incurved, piercing tip, cutting edge tooth- 
less, labrurn lancet-shaped, tip hyaline, reaching middle of 
mandible; anterior border of anteclypeus slightly convex; post- 
clypeus very short, not separated from forehead ; pronotum sub- 
reniform, narrower than head, anterior and posterior borders 
slightly bilobed, lateral borders rounded, converging posteriorly ; 
mesonoturn oval, the former slightly narrower than pronotum, 
while the latter is broader. 
Measurements of the soldier . 
mm. 
Length of body 
5.00 
Length of head with mandibles 
2.37 
Length of head without mandibles 
Width of head 
1.56 
1.18 
Width of pronotum 
0.84 
Length of pronotum 
0.50 
Worker. — Head, thorax, and abdomen milk white, densely 
covered with short spiny hairs. 
