42 The Philippine Journal of Science 1921 
Soldier. — Similar to Lobitermes Holmgren. Head broad, flat 
and smooth, somewhat longer than broad; forehead nearly ver- 
tical, with notch in middorsal region of border. Antennae with 
11 to 14 segments, third segment not much larger than second. 
Mandibles distinctly toothed. 
Genotype, Plano cry ptotermes nocens sp. nov. 
I have founded this new genus for the species described 
below ( P . nocens) and several others from other parts of the 
Islands to be described later. Calotermes pinangae (Haviland), 
which Holmgren places provisionally in his subgenus Lobitermes, 
probably belongs with these species. All the data I can gather 
from descriptions and illustrations point to that conclusion and 
a study of the winged form will probably show this to be true. 
I had been led to the belief that the adult of P. nocens would 
agree with that of Cryptotermes for the reasons that Cryptoter- 
raes-like adults had been taken from time to time in numerous 
places known to be infested with Planocryptotermes, and that no 
other Kalotermitinae adult had been taken in these vicinities 
except the tiny form which I have since determined to be the adult 
of C. cynocephalus. With so many houses infested with these 
termites it seemed extremely unlikely that the adults had escaped 
notice so long and as I have pointed out above the only adults 
captured showed the Cryptotermes type of wing venation. 
Very recently adults found in colonies of P. nocens and other 
species of the genus have confirmed this assumption, making it 
necessary to establish the new genus for the group, since the 
adults of Lobitermes do not have the Cryptotermes venation. 
The soldiers of the new genus are characterized by a larger 
size than those of Cryptotermes, by a larger head which is flat- 
tened dorsally and is considerably broader than high and some- 
what longer than broad, by a more or less pronounced notch 
in the projecting rim of the frontal area, and by the absence 
of any considerable elaboration or rugosity in the frontal area 
which characteristically makes more than a right angle with 
the mandibles, which in turn are longer and slenderer than in 
Cryptotermes and distinctly toothed. They are characteristically 
house termites but are sometimes found in dead limbs of trees. 
Like Cryptotermes their presence is denoted by the piles of little 
faecal pellets dropped from openings in the boards they inhabit 
(see Plate 6). 
