xv. 4 Oshima: Formosan Termites 327 



wings fuscous, with yellowish subcostal band ; head, thorax, and 

 abdomen densely pilose. 



Head round; fontanelle somewhat elevated, minute; antennse 

 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, antennae, 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. 



