330 
Philippine Journal of Science 
1919 
Larva of soldier, with 12-jointed antennse . — All parts of body 
milk white ; tips of mandibles pale brown ; head coarsely pilose ; 
thoracic plates hairy; abdominal tergites densely covered with 
short hairs. 
Head broadly oval, slightly longer than broad, broader 
anteriorly; fontanelle indistinct; antennse 12-jointed, second 
joint nearly as long as third, third joint narrowest, fourth joint 
shorter than second, fifth to ninth joints spherical, apical joint 
elongate, narrower anteriorly; clypeus twice as broad as long, 
anterior border rounded, boundary between anteclypeus and 
postclypeus indistinct; Jabrum lancet-shaped, mandibles rather 
short and broad, with pointed and incurved tip; pronotum nar- 
rower than head, oval, anterior and posterior borders rounded; 
mesonotum and metanotum round, the former narrower than the 
latter and broader than pronotum. 
• Measurements. 
mm. 
Length of body 
4.00 
Length of head with mandibles 
1.50 
Length of head without mandibles 
0.93 
Width of head 
0.90 
Width of pronotum 
0.53 
Length of pronotum 
0.31 
Larva of royal form, with 12-jointed antennse. — Head, thorax, 
and abdomen whitish and sparingly provided with minute hairs. 
Head round, nearly as long as broad, anterior corners of 
transversal band yellowish brown; postclypeus slightly swollen, 
longitudinally depressed along median line; anteclypeus as long 
as postclypeus, anterior border rounded; labrum tongue-shaped, 
overlapping the mandibles; mandible triangular, cutting edge 
dark brown; antennse 12-jointed, second joint as long as fourth, 
third joint smallest, nearly half as long as second; pronotum 
ovoid, anterior border convex, slightly emarginate at middle, 
posterior border rounded; mesonotum and metanotum broader 
than pronotum, mesonotum narrower than metanotum. 
Measurements. 
mm. 
Length of body 
3.50 
Length of head 
0.84 
Width of head 
0.87 
Width of pronotum 
0.50 
Length of pronotum 
0.21 
Remarks. — In the present phase the external characters of 
the larva of the worker are similar to those of the larva of the 
royal form, except the size of the head. The former is provided 
