1352 Rocer C. SmitH 
gray; first abdominal segment with no prominent lateral tubercles but some 
short setae on sides; some variation in coloration, chiefly in the amount of 
brown. (This larva was nearly ready to pupate; less advanced ones are darker.) 
Pupa.—Cocoon slightly elongate spherical, of dense, pure white silk. Length 
of cocoon, 3.4 mm.; width, 2.6 mm. Late pupa with markings of adult faintly 
outlined. Early pupae difficult to classify. 
Adult.—Head yellow above, gray below; antennae with a prominent reddish 
brown or maroon stripe from eyes to mouth; an orange spot between bases of 
antennae; a pair of elongate orange spots above eye; occiput pure yellow; distal 
segment of palpi brownish; antennae wholly pale. Body bluish green, with a 
fairly prominent yellowish dorsal area. Prothorax marked above with two 
pairs of orange spots. Mesothorax with a pair of orange spots in front. Abdo- 
men yellowish above, green on sides; first three segments variously marked 
with orange on sides. Wings fairly broad; front pair scarcely acute at tips; 
hind pair acute at tips; gradate veinlets brownish black; ends of costals and 
radial sectors brown; pterostigma distinct. Length of adult, 12 to 16 mm. 
(There is some variation in the size and intensity of the color spots. The 
orange spots vary to reddish and the yellow dorsal area varies in prominence. 
There is also some variation in the length of the adults.) 
Chrysopa chi Fitch (Plate LX XXIT) 
1855 Chrysopa chi. Fitch, First report, p. 87. 
1855 Chrysopa upsilon. Fitch, First report, p. 87. 
1861 Chrysopa chi. Hagen, Synopsis Neuroptera N. Amer., p. 213. 
1861 Chrysopa ypsilon. Hagen, Synopsis Neuroptera N. Amer., p. 213. 
1903 Chrysopa chi. Banks, Trans. Amer. Ent. Soc., vol. 29, p. 148. 
1903 Chrysopa ypsilon. Banks, Trans. Amer. Ent. Soc., vol. 29, p. 148. 
The two species Chrysopa chi and C. upsilon are described by Fitch 
and designated the X and Y spotted golden eyes. Hagen (1861) rede- 
scribed both species, and after his description of C. ‘‘ypsilon’’ he added: ~ 
‘‘At first sight it resembles the preceding [C. chi]; is it different?’’ 
Banks (1903) describes the two species in comparison, and adds: ‘‘It 
[C. *‘ypsilon’’] is very close to Ch. chi, but the difference in head-mark- 
ings appears to be constant.’’ 
The writer has carefully reared both the X and the Y variety, and 
has concluded that they are the same species for the following reasons: 
1. Batches of eggs from either variety yielded adults marked the 
same as the other, as well as intermediate varieties. 
2. The larval colorations were identical. 
3. The adults of both varieties occurred in the same habitats. 
4. There was an intergradation of the head markings. Six steps 
in this intergradation are shown in Plate LX XXII, 7, and others may be 
added though they are less distinctive. To illustrate the proportion of 
each of these steps, the catch from a trip on June 22, 1916, was classified. 
These specimens were all taken within an area of an acre. Of the 87 
