828 



PROCEEDINCS OF THE yATIOXAL MUSEUM. 



VOL. 40. 



Figs. 190-194.— Ophiogomphus seveeu.s, nymph. I'.K). Lateral mew. 191. Dorsal yif.-w. 192. 



Segment 10. 193-194. Labium. 

 Figs. 195-197.— Ophiogomphus occidentis, nympu. 195. Abdomen, dorsal view. 196. Segment 10. 



197. Labium. 

 Figs. 198-201.— Gomphus sp. 198. Dorsal ^^EW. 199. Head. 200. Labium. 201. Segments 9 



and 10. 



12. AESHNA UMBROSA OCCIDENTALIS Walker. 



This species was very abundant during the latter part of July. 

 It was first seen July 10. 



