6 BULLETIN 1232, U. S. DEPARTMENT OF AGRICULTURE. 
scolytid, but showing additional enlargements. This is the same tree 
on which workers and soldiers of Evtermes debilis Heer were col- 
lected on October 26, 1921, from shelter tubes. Workers and a few 
soldiers of E. debilis were again collected on June 19, 1922; soldiers 
were scarce. 
CRYPTOTERMES THOMPSONAE Snyder. 
.Several species of Cryptotermes occur at Panama, but C. thomp- 
sonae is the only one on which the writers have any biological notes. 
It is very destructive to the dry woodwork of buildings. 
On July 25; 1921, Zetek and Molino collected soldiers and winged 
and dealated sexual adults of Cryptotermes thompsonae from a pop- 
lar case (PL III, D) in the office of the Board of Health Laboratory 
at Ancon, Canal Zone. This wooden case is a survival of the equip- 
ment of the old wooden hospital and was put into this ward when 
the new hospital building was completed. The termites were mostly 
in the baseboard. The winged forms were not very abundant and 
were congregated in small " pockets ;" the soldiers were not aggres- 
sive or plentiful. 
Zetek found soldiers and dealated sexual adults in hard beech 
wood of a drawer of a desk in Section B of Ancon Hospital on 
August 30, 1921. The desk had been in this screened concrete 
building for five years (PL III, A). 
The dry hardwood of a back panel of an organ in the Roman 
Catholic Chapel at Ancon, Canal Zone, was found by Zetek, on 
October 19, 1921, to be damaged by this termite. The insects had 
gone into nearly all parts of the wood (PL III, B). No winged 
forms were present and soldiers were very scarce: nymphs of the 
sexual adults were abundant. Out of the back of this organ as 
much as 500 cubic centimeters of impressed pellets of excrement 
(PL III, C) could have been obtained; the actual size of these pel- 
lets is 0.85 by 0.54 millimeter. 
Dealated adults were collected on June 19. 1922, under bark on 
the trunk of a dead tree on the Ancon Hospital grounds. 
LEUCOTERMES TENUIS Hagen. 
Species of Leucotermes are very similar in habit to species of 
Reticulitermes. Nevertheless, unlike the latter, they consistently 
line their galleries with white excrement (not spotted) and Live in 
association with other insects. Earthlike shelter tubes (PL IV, 
A, B, C) are constructed by species of both genera. Two species of 
Leucotermes occur in Panama, namely, tenuis Ilagcn and cotw 
notatus Snyder: apparently these species do no1 greatly differ in 
their habits; each species occurs on both the Atlantic and Pacific 
slopes. Species in this genus not only injure living vegetation and 
the woodwork of buildings, but also damage lead-sheathed under- 
ground cables. 
On August 10. 1021. Zetek and Molino found a nest on the trunk 
of a coconut palm on the Venado Plantation. Yenado. Pacific slope. 
Canal Zone. The termitarium was about 8 inches by 5 inches, of 
earthlike material, soft outside and harder within, and composed 
largely of cells. This -nest " was partly within the trunk— about 
•J inches. It contained workers, soldiers, and a iirst-form queen 
