356 The Philippine Journal of Science i9i6 



Soldier (the smaller form). — Head reddish brown; abdomen 

 straw-colored; mandibles reddish brown; labrum, antennae, and 

 legs somewhat paler. Head smooth; abdominal tergites pro- 

 vided with microscopically minute hairs, two or three posterior 

 tergites with longer hairs. 



Head quadrangular, sides strongly converging anteriorly; 

 fontanelle indistinct; basal portion of clypeus short, posteriorly 

 not separated from f or^ehead ; labrum lancet-shaped, with pointed, 

 hyaline tip; mandibles saber-shaped, tip strongly incurved; 

 antennae 17-jointed, 2d joint as long as 3d, 4th joint slightly 

 shorter than 3d; pronotum semicircular, anterior and posterior 

 borders weakly indented at middle; mesonotum considerably 

 narrower than pronotum, sides rounded, posterior border slightly 

 concave ; metanotum as broad as pronotum, oval, posterior border 

 straight. 



Mm. 



Length of body . 6.00-7.00 



Length of head with mandible 3.59-3.75 



Length of head without mandible 1.81-2.18 



Width of head 1.56-1.75 



Width of pronotum 1.40-1.44 



Length of pronotum 0.78-0.84 



Worker (the larger form). — Head reddish yellow; abdomen 

 yellowish. Head and abdominal tergites sparingly pilose. 



Head quadrate, with rounded posterior border; basal portion 

 of clypeus markedly swollen ; fontanelle whitish, round ; antennae 

 18-jointed, 2d joint nearly as long as 3d, 4th joint half as long 

 as 3d; pronotum saddle-shaped, anterior and posterior borders 

 bilobed. 



Mm. 



Length of body 6.00-6.50 



Width of head 1.97-2.12 



Width of pronotum 1.09-1.21 



Worker (the smaller form). — Paler and smaller. Hairiness 

 as in the former. 



Antennae 17-jointed, 2d joint slightly longer than 3d, 4th joint 

 as long as 3d. 



Mm. 

 Length of body 5.00-5.50 



Width of head * 1.31-1.39 



Width of pronotum 0.91 



Habitat. — LUZON, Laguna, Los Baiios and Mount Maquiling 

 (Baker) ; Manila (Banks), June 26, 1910. 



