viii. D. 4 ^ Oshim-a: Termites from Singapore 285 



apical end, 4th joint longer than the proximal 3 joints taken 

 together; a stout tooth -like projection present at base of apical 

 claw. 



Measurement. Mm. 



Length with wings 28.00 



Length without wings 12.00 



Leng-th of head 2.19 



Width of head 2.09 



Leng-th of pronotum • 2.03 



Width of pronotum 2.36 



Soldier (larger form,). — Head reddish brown, darker ante- 

 riorly; thorax, abdomen, and legs dark yellow; head quadrilat- 

 eral, slightly narrowed anteriorly, considerably rounded on 

 sides, dorsally . vaulted, ventrally flattened; vertex inclined; in 

 the center of head a small fontanelle present; antennae 17- 

 jointed, 2d joint longer than 3d; labrum lanceolate, with white 

 apex, broader proximally than distally, not reaching to middle 

 of mandible; mandibles shorter than half the length of head, 

 saber shaped, with incurved and upcurved apex, with smooth 

 cutting edge; left mandible serrated along inner basal margin; 

 pronotum saddle-shaped, with lateral margins converging pos- 

 teriorly, anterior margin bilobed and slightly convex, posterior 

 margin emarginate at middle, anterolateral angles quadrangular, 

 posterolateral angles broadly rounded; mesonotum broader than 

 pronotum, oval, with distinctly bilobed posterior border; meta- 

 notum broader than mesonotum, with nearly straight posterior 

 border; abdomen rather small, ovoid. 



Measurement. Mm. 



Length of head with mandible 5.00 



Length of head without mandible 3.69 



Width of head 3.06 



Length of pronotum 1.09 



Width of pronotum 2.44 



Length of body 9.50 



Soldier (smaller form). — Head pale yellow, pronotum paler, 

 abdomen and legs whitish; head quadrangular, slightly nar- 

 rower anteriorly, with rounded posterior border, sides con- 

 vex, dorsally vaulted; without fontanelle; antennae 17-jointed, 3d 

 joint slightly longer than 2d; labrum lanceolate, with white apex, 

 reaching beyond middle of mandibles; mandibles slender, saber 

 shaped, with smooth cutting edges; inner basal margin of left 

 mandible with a few small teeth; pronotum saddle-shaped, nar- 

 rower than head, its anterior border convex, with a slightly 

 bilobed projecting portion in the middle; posterior border emar- 

 ginate in the middle; anterior angles acutely rounded; pos- 



