224 DRAGONFLIES OF NORTH AMERICA 
197. Libellula flavida Rambur 
Ramb. ’42, p. 58: Mtk. Cat. p. 137: Howe ’20, p. 70: Ris ’10, p. 271. 
Syn: plumbea Uhler 
Length 48 mm. Expanse 78 mm. Atl. Coast, Pa. and N. J. to Fla. 
Face yellowish in the 9, black in the @ and shining, with yellow fronto- 
clypeal suture and anteclypeus. Occiput brownish with a black cross stripe 
before it through the ocelli. Thorax brown with middorsal stripe of yellow; 
becoming wholly pruinose blue above with age. Sides yellow, brown at wing 
and leg roots and with a single brown stripe (stripe 5) on last lateral suture. 
Legs blackish, paler to near the knees. Wings broadly tinged with yellow and 
with diffuse basal brown streaks in subcostal and cubital spaces; stigma tawny. 
Abdomen brown, becoming black with age; sometimes showing obscure mid- 
dorsal stripe and a black line on the lateral carina. Appendages brown becoming 
black with age. 
198. Libellula semifasciata Burmeister 
Burm. ’39, p. 862: Mtk. Cat. p. 141: Ris ’10, p. 266: Howe ’20, p. 73: Garm. 
27, p. 252. 
Syn: maculata Ramb., ternaria Say 
Length 42 mm. Expanse 74 mm. Me., Minn. to Fla. and Tex. 
This is a fine pale brownish species with prettily spotted and amber tinted 
wings. Face pale, waxy yellow, shining, paler across the middle. Vertex oliv- 
aceous with a narrow black cross stripe through the ocelli, before it. Thorax 
pale brown in front and yellowish upon the sides with 2 stripes (stripes 4 and 5) 
upon the sutures. Legs brown, yellowish at base, and with blackish tarsi. Wings 
spotted as shown in figure; venation richly tinged with yellow as far as triangle 
and along the region of the radius out to the wing tip; stigma rufous, bordered 
with black veins, ends pale. 
The senior author (’01) has found this species the earliest of the 
genus to be abroad in the spring, making its appearance in the north 
before the middle of May. “TI have oftenest found the imago about 
woodland brooks, rarely about ponds.” It flies in swift dashes, and in 
long sweeping curves. 
199. Libellula pulchella Drury 
The Tenspot 
Drury 1773: Mtk. Cat. p. 189: Ris ’10, p. 265: Whed. ’14, p. 99: Howe ’20, 
p. 73: Smn. ’26, p. 33: Garm. ’27, p. 249. 
Syn: bifasciata Fabr., confusa Uhler, versicolor Fabr. 
Length 52 mm. Expanse 90 mm. Me. and N. D. to Tex. and Fla. 
A fine, large, strong-flying species. Face obscure brownish, paler in middle 
and yellowish on top of frons. Vertex brown with a black cross stripe before it, 
through the middle ocelli. Occiput yellow with brown outer angles. Thorax 
brown clothed with a thin white pubescence; sides with 2 yellowish stripes 
well defined inferiorly, very oblique, first crossing the middle suture above the 
