LIBELLULA 227 
of labrum and top of frons. Thorax brownish, becoming whitish on front with 
age, except carina. Sides with 2 lines of yellowish streaks (equivalent to stripes 
of other species), the foremost, a row of spots rather widely separated at the 
middle suture, the second, a horizontal streak low down on the sides, seeming 
to be continued by the line of spots beneath the swollen base of the abdomen. 
Legs black. Wings spotted, as shown in figure, with a chalky white area, in old 
specimens, around the basal brown spots on both wings in the males externally. 
Abdomen with a line of large ill-defined pale spots upon each side. Appendages 
blackish. 
Kennedy (’17) found this species, 
Common on the town drain. In the morning the individuals . . . . were easily 
captured while seated on brush and weeds in the sunny openings along the 
stream..... A female observed ovipositing flew about 2 feet above the water 
and made several quick swings downward, tapping the water with her abdomen 
just once for each swing. 
203. Libellula composita Hagen 
Hag. ’73, p. 728: Mtk. Cat. p. 186: Ris ’10, p. 267: Kndy. ’17, p. 625. 
Length 42 mm. Expanse 78 mm. Yellowstone, Utah, Nev., Calif. 
Face, frons and vertex white, a small black line across the base of the frons 
and up to the middle of the ocelli. Thorax in front a clear, violet brown, with a 
yellowish band across the middle, bordered by a whitish one; antehumeral and 
humeral stripes well defined (stripes 2 and 3); stripe 4 abbreviated below, and 
5 complete but smaller. Legs blackish, the base of the femora yellowish. Wings 
hyaline; costa as far as stigma white, beyond black; stigma dark reddish brown; 
base of hind wing yellowish. Abdomen fairly broad, depressed; black with whitish 
yellow pattern. Wedge shaped lateral spots on 3-7; 8-10 wholly dark. 
204. Libellula incesta Hagen 
Hag. 61, p. 155: Mtk. Cat. p. 187: Ris ’10, p. 270: Davis ’12, p. 68: Brim. ’20, 
p. 138: Howe ’20, p. 69: Byers ’27a, p. 113. 
Length 54mm. Expanse 90 mm. Me. and Wis. to Mo. and N.C. 
Aslender clear-winged species with dull yellow thoracic and abdominal stripings 
that entirely disappear, becoming dark pruinose blue with age. Face obscure 
yellowish, becoming metallic, shining, on labrum and on top of frons. Frontal 
tubercle acutely double pointed, dark colored. Occiput brown. Thorax clothed 
with very short, dark pubescence, when young showing narrow median pale 
spots on the brown front; 2 blackish spots below the yellowish sides and very 
diffuse discolorations along the lateral sutures, especially the hindmost (stripe 5). 
Legs blackish, paler at base. Wings hyaline except for brown tips of variable 
extent, generally restricted to margin beyond stigma; stigma blackish. Some- 
times there is a brownish streak in the base of the subcostal space. Abdomen 
very slender in both sexes, blackish with a broad yellow stripe each side, becoming 
wholly purplish black with age. Appendages blackish. 
Found about the shores of lakes from June to September (Mutt- 
kowski ’08). 
