THE BIOLOGY OF THE CHRYSOPIDAE 1353 
specimens, 20 were No. 1, or true C. cht, 17 were of the second variety, 10 
were of the third, 15 were of the fourth, 11 were of the fifth, and 14 were 
of the sixth, or true upsilon, variety. 
Both of these species were described by Fitch at the same time, and 
on the same page of his report. C. chi was the first described, and 
therefore becomes the true species, and C. wpsilon becomes a synonym. It 
appears from rearings and collections that C. chi is slightly more abun- 
dant than C. upsilon. It is an early species, having been found fairly 
abundant at the McLean bogs in the middle of June, in goldenrod 
patches. It has been taken aiso in Ithaca, along shaded hedges and on 
spiraea, in June. 
The life history of some specimens of C. chi may be summarized as 
follows: 
Number of | Date egg Date of Date of Date of Date cocoon 
specimen was laid hatching first molt | second molt was spun 
BY7(s1l July 15 July 20 July 23 July 26 Aug. 2 
57.2 July 15 July 20 July 23 July 26 July 30 
57.3 July 15 July 20 July 24 July 26 Aug. 1 
~The life history of some specimens of the wpsilon variety was as fol- 
lows: 
Number of| Dateegg | Date of Date of Date of |Datecocoon|Date adult 
specimen | was laid | hatching | first molt |second molt} Was spun | emerged 
60.1 July 15 July 20 | July 24 | July 27 Aug. 1 Aug. 15 
60.2 July 15 | July 20 | July 24 | July 26 | July 30 Aug. 15 
60.3 July 15 July 20 | July 24 | July 25 | Aug. 1 Aug. 15 
Egg.—tLight bluish green in color, with a distinct yellowish tinge. Nor- 
mally stalked, laid singly. Micropyle white; micropylar network pattern indis- 
tinct. Length of egg, 0.99 to 1.07 mm., average 1.05 mm.; diameter, 0.46 to 0.5 
mm., average 0.49 mm.; length of stalk, 4.49 to 5 mm., average 4.68 mm. 
First-instar larva (one day old).—Almost identical with the first-instar 
larva of GC. oculata. One large black spot covering dorsum of head; a promi- 
nent notch at posterior border, extending nearly to middle. All lateral tuber- 
cles except meso- and metathoracic having two prominent setae projecting 
laterad; meso- and metathoracic lateral tubercles having three setae each; 
lateral tubercles fairly prominent. Body entirely yellowish gray; a pair of 
brownish spots in front of mesothoracic depressions; metathoracic tubercles 
with a large area of basal part brownish, this being the darkest part of the 
body. First abdominal segment without lateral tubercles; segments 5 to § 
inclusive with brown spots at base of large outer pair of dorsal tubercles; 
tenth segment with three longitudinal dark lines; dorsal tubercles on segments 
