19, 1 Light: Notes on Philippine Termites, II 39 
is overlapped above by the lower portion of the frontal flange; 
below this the ventral gena is extended to form a much smaller 
spine, lying over the mandibular hump. 
Dorsal profile in side view high, domed posteriorly, sunken 
in the middle and elevated anteriorly. Seen from above there 
is a very distinct concavity in front of the middle of the head 
and behind the flange. This is narrow and elongated and, with 
the middorsal notch in the flange, gives the head a distinctly 
bilobed appearance in dorsal view. The surface of the flange and 
the region of the head posterior to it, particularly the sides of 
the dorsal cavity, are distinctly rugose. 
Mandibles very short and strongly incurved, when closed 
protruding for a distance but little more than one-third of the 
anterior surface of the head; antenne of from 9 to 12 segments, 
longer than the head depth; third segment smaller than the 
second and more heavily chitinized; pronotum strongly arched, 
deeply bilobed anteriorly, rounded laterally and posteriorly, the 
anterior and posterior regions being elevated. 
Measurements of Cryptotermes cynocephalus sp. nov., soldier. 
mm. 
Body length 3.25 
Body length, without head 2.65 
Head length (posterior margin to middorsal region of 
flange) 0.90 
Head width 0.75 
Pronotum length 0.50 
Pronotum width 0.85 
“Workers” and nymphs.—Small and slender. Considerably 
smaller than those of Planocryptotermes nocens g. et sp. nov. 
which they otherwise resemble. 
SYSTEMATIC POSITION 
This species is chafacterized by the small size of all castes 
(less even than that of C. cavifrons Banks), the strikingly de- 
veloped and roughened margin of the frontal region of the sol- 
dier, and the very small mandibles. The head profile of the 
soldier resembles that of C. cavifrons, but it differs from the 
latter and resembles C. brevis (Walker) in the roughened con- 
dition of the anterior and dorsal regions of the head. From the 
Japanese form, C. kotoensis Oshima, the soldier differs, among 
other characters, in its small, weak mandibles. From C. domes- 
ticus (Haviland), its nearest neighbor geographically, it differs 
in its smaller body size, its smaller and narrower head, its 
smaller mandibles, in that the anterior surface of the head 
