Aug. 15, 1924 
New Termites from the Canal Zone 
187 
Abdomen dirty gray-white with yel¬ 
lowish tinge; tergites with dense short 
hairs and a row of long hairs at base of 
each tergite; cerci present but not 
prominent. 
Measurements. —Length of entire 
soldier: 5.50 mm. Length of head 
with mandibles: 2.50-2.60 mm. Length 
of head to anterior margin: 2.10- 
2.20 mm. Length of left mandible: 
0.90. Length of pronotum: 0.80-0.90 
mm. Length of hind tibia: 0.85 mm. 
Width of head: 1.40-1.55 mm. Width 
of pronotum: 1.40 mm. 
Type locality. —Rio Chinilla, Ca¬ 
nal Zone, Panama. 
The specific name is derived from 
the emarginate pronotum of the sol¬ 
dier; this is a larger species than K . (G.) 
pubescens Snyder of Porto Rico and the 
soldier has a markedly emarginate 
pronotum. 
Described from a series of soldiers 
collected with nymphs in a decaying 
log on the ground at the type locality 
by T. E. Snyder and I. Molino, on 
February 22, 1924. 
Type, soldier. —Cat. No. 27268, 
U. S. National Museum. 
Cornitermes acignathus Silvestri. 
Dealated male adult.— Head cas- 
taneous, round, with a hyaline, suboval, 
raised fontanelle, in a depression 
(larger than an ocellus); head with few 
scattered long hairs. Eye black, large 
projecting, not quite round, very near 
lateral margin of head. Ocellus hya¬ 
line, large, suboval, upper rim project¬ 
ing, separated from eye by a distance 
about one-half the small diameter of 
an ocellus. 
Antennae yellow-brown, 15-seg- 
mented, with long hairs; third segment 
subclavate, longer than second or 
fourth segments; last segment slender, 
subelliptical. 
Pronotum same color as head, an¬ 
terior margin straight, posterior margin 
emarginate, narrowing posteriorly, hya¬ 
line “spread-wing”-shaped markings, 
anteriorly centering on median line, 
an elliptical marking at each anterior 
corner, and two elliptical markings 
near posterior margin separating from 
a common base at the median line to 
form an acute angle, diverging from the 
median line toward the sides; with 
dense long hairs. 
Legs yellow-brown, tibiae darker, 
elongate, slender, pubescent. 
Abdomen with tergites castaneous, 
two spiracular, hyaline markings about 
one-third way toward median line, one 
at each side in center of tergite (more 
prominent than in C. striatus Hagen), 
with long hairs near base of tergites, 
cerci not very prominent. 
Measurements.- —-Length of entire 
dealated male adult: 8.50 mm. Length 
of head: 2.15 mm. Length of prono¬ 
tum: 1.05 mm. Diameter of eye (long 
diameter): 0.70 mm. Diameter of 
hind tibia: 2.60 mm. Width of head 
(at eyes): 2.15 mm. Width of prono¬ 
tum: 2.00 mm. Length of mature 
queen: 18.50 mm. Width of abdomen 
of mature queen: 6.50 mm. 
The dealated adult of C. acignathus 
is lighter colored, and larger than that of 
C. striatus Hagen, with larger fontanelle 
and eyes, ocellus more distant from 
eye, and markings on pronotum differ¬ 
ent. The species C. acignathus has been 
hitherto known only from the soldier 
caste from which it was described by 
Silvestri in 1903, although Nathan 
Banks states that the adult is similar 
to C. striatus, with a slender fontanelle. 
Described from mature, dealated 
males and females (kings and queens) 
of the first form collected at Rio Tapia, 
Republic of Panama, on February 7, 
1924, by the writer with soldiers and 
workers in decayed logs on the ground 
in the jungle. Other specimens were 
collected by the writer at Rio Chinilla, 
Canal Zone, Panama, on February 22, 
1924. These specimens are all de¬ 
posited in the collection of the United 
States National Museum. 
f Armitermes (Armitermes) chagresi, 
new species. 
Soldier.— -Head light yellow, nearly 
as broad as long, head and nasus not 
convex in profile, slightly concave at 
base of nasus, sides convex, broadest 
near posterior margin, narrowed an¬ 
teriorly; with scattered long hairs.- 
Nasus light yellow-brown, fairly robust, 
broad at base, narrowing anteriorly, 
dense short hairs at apex, not as long 
as head (in A. armigera Motschulsky 
nasus is longer than head). Man¬ 
dibles slender and strongly curved, 
with slightly outward pointing mar¬ 
ginal tooth nearer base than apex 
(fig. 6). 
Antennae light yellow-brown, of 14 
segments, pubescent, extending far 
beyond tip of nasus; third segment 
subclavate, longer than second or 
fourth segments; segments becoming 
longer and broader toward apex; last 
segment short, slender, subelliptical. 
Gula not much narrowed in middle. 
