NO. 2192. DRAG0 NFLIE8, CALIFORNIA AND NEVADA— KENNEDY. 485 



time few specimens have been taken. I found it common in the 

 San Francisco Bay region and extending up the Sacramento Valley 

 as far as Marysville. Probably it will be found throughout the Sac- 

 ramento and San Joaquin valleys. I can see no difference between 

 the habits of this and those of disjunctus and unguiculatus with which 

 it is usually associated. This is the earlier of the three species but 

 their periods overlap. L. stultus at Palo Alto, California, emerges in 

 April and May and is scarce by the middle of July. It is distinctly 

 a slough or pond species. (See figs. 3-10, 14-18.) 



During May this species was very abundant about the small ponds 

 on the crest of the Coast Mountains west of Stanford University. By 

 July 15 it had been largely displaced about these ponds by disjunctus. 



LESTES STULTUS Hagen. 



Male, color. — Labrum, vertical surface of clypeus, bases of mandi- 

 bles and genae pale pure blue. Dorsal surface of clypeus, frons, 



Figs. 1-2.— Agrion aequabile californicum 



Wings op male. 2. Wings of female. 



vertex, and postocular areas black, except a minute pale area external 

 to each lateral ocellus. Eyes pale pure blue above, grayish below. 

 (See fig. 3.) 



Prothorax black except a pale creamy stripe below the edge of the 

 lateral lobe and another pale stripe just above the coxa. Coxa 

 usually pale, in some individuals with an external black spot. Legs 

 creamy with an external black stripe on trochanter and femur, an in- 

 ternal black stripe on tibia, and tarsus black. Mesothorax ant^meta^ 

 thorax with anterior surface black except in some individuals middor- 

 sal keel narrowly creamy. In all a narrow antehumeral pale bluish 

 green stripe extending not quite to the antealar ridge. Upper half 

 or two-thirds of mesinfraepisternum black. Sides of thorax creamy 

 with bluish areas, except some black anterior to first lateral suture, 

 the demarcation angulated or irregular. Second lateral suture nar- 

 rowly and irregularly black, in some individuals followed by an irregu- 

 lar black stripe (see figs. 5-7). Metepimeron with a black spot on 

 its lower anterior edge. In some individuals a spot on the posterior 

 third of the metasternum. Metinfraepisternum entirely pale or with 

 its upper third black. Coxae creamy or with a black spot. Legs 

 colored as those on the prothorax. Pterostigmas black. 



