80 DRAGONFLIES OF NORTH AMERICA 
2 and 3 by a pale hair line (widened above to a triangular spot); stripes 4 and 5 
complete, 4 very irregular and conjoined to 5 above. Legs black beyond the 
knees and on dorsal side of femora; grayish at base. Wings hyaline; stigma black. 
Abdomen blackish in middle, whitish toward the base, orange brown toward the 
le a 
designatus 
tip. Segments 1 and 2 with middorsal pale stripe which on 3 becomes a triangle, 
and on 4, 5 and 6 a lanceolate spot; 2-7 with basal pale rings. Very broad on 7; 
7-9 with narrow apical rings. 10 and appendages wholly pale. 




25. Erpetogomphus designatus Hagen 
Hag. ’58, p. 401: Mtk. Cat. p. 86. 
Length 50 mm. Expanse 70 mm. Kan. and Ohio to Tex. 
Face yellow; labrum margined with brown anteriorly. Thorax yellow; stripes 
of the first pair broad, separate, widened forward almost reaching the collar; 
stripe 2 isolated above and below; stripe 3 complete and straight; stripe 4 inter- 
rupted in the middle; stripe 5 complete. Legs blackish on superior surface and 
tarsi, paler basally. Wings hyaline; costa and area near triangles yellowish; veins 
brown; stigma black. Abdomen yellowish becoming reddish on terminal seg- 
ments. Middle segments ringed with blackish at the joints, yellowish at sides 
and with the usual middorsal yellow spots, pointed to rearward, confluent 
basally with the yellow of the sides. Appendages yellow. 
26. Erpetogomphus compositus Hagen 
Hag. ’58, p. 400: Mtk. Cat. p. 86: Smn. ’26, p. 22. 
Syn: viperinus Hag. 
Length 49 mm. Expanse 64 mm. Ore., Wyo. and Ariz. to Tex. and Calif. 
A greenish gray species striped with brown and with brownish abdomen. 
Face and occiput greenish. Thoracic stripes of the first pair narrow, confluent 
across the carina, parallel sided and isolated at ends. Stripe 2 narrower and well 
