20 BULLETIX 276^ U. S. DEPAETMEXT OF AGEICULTUEE. 
small area at base of III, which are pale dusky; sparsely covered with 
delicate, inconspicuous hairs; segment III bearing 40 to 50 irregu- 
larly placed circular sensoria, TV bare, Y with 10 to 15 circular sen- 
soria, not including the usual cHstal one, more or less in a row but 
more thickly placed toward the apex: base of Yl with the usual distal 
ones. Beak whitish yellow, the tip black; reaching beyond the coxse 
of the nrst pair of legs but not to the middle cox^e. TVings as in the 
Tiviparous female. Legs long and slender, the femur pale yellowish 
to yellowish green, becoming blackish on the distal third, tibia pale 
brown and the tip black, tarsus black. Cornicles as in viviparous 
forms, pale with a shght duskiness and the tip blackish. Cauda 
ensiform and bearing moderately long hairs as in other forms, and 
pale du^ky to dusky in color. 
Measurements of body dimensions not made from hving specimens 
and mounted individuals are shghtly shriveled. The male is con- 
siderably smaller than the viviparous female.- Measurements from 
specimens mounted in balsam except as noted: Length of body, 1.4 
mm,, to tip of cauda, 1.55, width, 0.52; length of wing, 2.87 mm., 
width, 1.04; length of cornicle, 0.38 mm.; length of cauda, 0.20 mm. 
Measurements of antennal segments: 
I. 
n. 
m. 
IV. 
V. 
Yl base. 
VI fila- 
ment. 
Mm. 
Mm. 
Mm. 
Mm. 
Mm. 
Mm. 
Mm. 
0.156 
0.069 
0.696 
0.539 
0.626 
0.217 
10.852 
.156 
.069 
.696 
.547 
.609 
.243 
1 1.008 
.148 
.069 
.626 
.435 
.504 
.217 
2 .852 
.148 
.069 
.626 
.400 
.495 
.191 
2.800 
.139 
.069 
.435 
.469 
.174 
(=) 
1 Measured immediately after placing in balsam. 
2 Specimens killed in 70 per cent alcohol, mounted in balsam tbe foUowing day, and measured immedi- 
ately afterwards. 
Wingless male (fig. 8). — (Described from two specimens, one 
observed in copula, October 18, 1911.) Head dusky brown, thoracic 
segments and first abdominal segment pale yellowish; remainder of 
abdomen pale green with dusky markings as follows: One spot on 
each side, dorsolateral in position, on the thoracic segments and the 
first five or six abdominal segments, those on the first two thoracic 
segments very faint, the others gradually larger, those on the first 
three abdominal segments being transverse markings rather than 
simple clots, and the markings on the following abdominal segments, 
dots or small circular spots. Antennae situated on prominent 
frontal tubercles; much longer than the body; sparsely hauy; fila- 
ment of segment Yl longer than III; I and II dusky brown to black- 
ish; III black, excepting paler extreme base; IV dark brownish and 
black at tip; V black, excepting a small portion at the base which is 
brownish, and Yl black; segment III bearing 47 to 57 irregularly 
