236 DRAGONFLIES OF NORTH AMERICA 
the sutures and on the crest, and with broad, pale oblique stripes more or less 
evident on the sides behind the 2 principle sutures. Legs olivaceous, becoming 
blackish at the joints and on the tarsi. Abdomen olivaceous to rufous with the 
apical carinae of the middle segments narrowly blackish. Appendages pale. 

216. Sympetrum obtrusum Hagen 
Hag. ’67, p. 95: Mtk. Cat. p. 162: Ris ’11, p. 685: Wmsn. 714, p. 456: Howe ’20, 
p. 80: Garm. ’27, p. 275. 
Length 31 mm. Expanse 50 mm. N. H. to B. C. 
Like rubicundulum in all respects except as shown in the figures, but smaller 
and with the abdominal appendages tending to be black on the apical half. 
Found about “lakes and rivers June to October’ (Mtk. ’08, p. 110). 
217. Sympetrum rubicundulum Say 
Say ’39, p. 26: Mtk. Cat. p. 163: Ris ’11, p. 682: Wmsn. ’20, p. 103: Howe ’20, 
p. 79: Ndm. ’27, p. 20: Garm. 727, p. 272. 
Length 33 mm. Expanse 54 mm. Me. and Pa. to N. D. and Wyo. 
A dainty reddish species of wide distribution. Face reddish yellow. Vertex 
darker, with a conspicuous black cross stripe that includes the middle ocellus. 
oy 
rubicundulum 
ae 
assimilatum 

Occiput rufous. Thorax reddish brown clothed with tawny pubescence; un- 
marked, paler beneath. Legs black beyond base. Wings hyaline with a tinge 
