xv, 4 Oshima: Formosan Termites 327 
wings fuscous, with yellowish subcostal band ; head, thorax, and 
abdomen densely pilose. 
Head round; fontanelle somewhat elevated, minute; antennae 
19 -jointed, second joint twice as long as third, fourth joint as 
long as third; eye round and prominent; ocellus oval, separated 
from eye by a distance more than its longest diameter; post- 
clypeus swollen, width more than twice its length; pronotum 
narrower than head, subsemilunar, anterior border nearly 
straight, sides strongly converging posteriorly, posterior border 
rounded, slightly curved at middle; mesonotum and metanotum 
longer than pronotum, their posterior borders strongly indented 
at middle ; anterior wing stumps somewhat larger than posterior, 
not covering the latter; radius nerve of anterior wing runs near 
and parallel to costal, with no branch ; median nerve starts from 
proximal part of cubitus, giving off four bifurcating branches 
at the apical area, cubitus with about ten branches, not reach- 
ing tip of wing; median nerve of posterior wing starts from 
basal part of radius. 
Measurements of the imago. 
mm. 
Length of body with wings 
27.00 
Length of body without wings 
9.00 
Length of head 
2.20 
Width of head 
2.00 
Width of pronotum 
24.00 
Length of pronotum 
* 
1.20 
Length of anterior wing 
24.00 
Soldier . — Head reddish yellow; mandibles reddish brown; 
labial palpi, antenna, and legs yellow; abdomen pale yellowish 
white; head, thoracic plates, and abdominal tergites sparingly 
pilose, long hairs mingling with subequal minute hairs. 
Head ovoid, longer than broad, sides slightly converging an- 
teriorly; antennae 16 -jointed, third joint smallest, second joint 
about twice as long as third, fourth joint shorter than third; 
mandibles saber-shaped, with incurved and upcurved tip, each 
mandible provided with one tooth, of which the left one is 
stronger and distinct; labrum lancet-shaped, scarcely reaching 
middle of mandible, with acutely rounded tip ; clypeus very short, 
not separated from forehead; pronotum slightly broader than 
long, anterior border elevated and distinctly bilobed, posterior 
border rounded, concave at middle; mesonotum oval, nearly as 
broad as pronotum, posterior border curved at middle; meta- 
notum much broader than pronotum, posterior border rounded. 
