NO. 1692. DRA00NFLIE8 OF THE MISSISSIPPI VALLEY—WILSON, ggg 



railroad tracks cross and recross this region in many directions and 

 afford a convenient means of reaching localities that would otherwise 

 be inaccessible. Much of the collecting was done along these railroad 

 tracks. 



1. LIBELLULA PULCHELLA Drury. 



Common everywliere around tlie outskirts of tlie town. 



2. PLATHEMIS LYDIA (Drury). 



A single colony, including both sexes, of this species was discovered at a 

 small pond just north of the railroad tracks; none was seen anywliere 

 else. 



3. ANAX JUNIUS (Drury). 



Very common over the marshes and along the La Crosse River above the 

 city. 



4. EPICORDULIA PRINCEPS (Hagen). 



A few seen patrolling the banks of the La Crosse Kiver. 



5. SYMPETRUM RUBICUNDULUM (Say). 



A few individuals secured in the edge of the woods back of the railroad 

 tracks. 



6. GOMPHUS FRATERNUS (Say). 



Both sexes captured on the gravel along the river bank. 



7. GOMPHUS VASTUS Walsh. 



In company with O. fraternus and more numerous. 



8. PERITHEMIS DOMITIA (Drury). 



Both sexes obtained at the lake in the park. 



9. ENALLAGMA HAGENI (Walsh), E. EBRIUM (Hagen), and E. SIGNATUM (Hagen). 



Found together in the long grass and weeds along the river bank ; the 

 first-named species 'the most abundant. 



10. LESTES RECTANGULARIS Say and L. VIGILAX Hagen. 



Found a little distance back from the water, near the woods. 



11. ARGIA MCESTA PUTRIDA (Hagen) and A. APICALIS (Say). 



Found in the shrubbery along the water's edge, the last mentioned the 

 most abundant species. 



12. ISCHNURA VERTICALIS (Say). 



A few found in company with the species of Enallagma. 



XIII. BROWNSVILLE, WISCONSIN, JULY 23. 



After leaving La Crosse the only Neuroptera seen were at Browns- 

 ville, Wisconsin, Crosby's Slough, Minnesota, and Victory, Wiscon- 

 sin. At each of these places the high and wooded banks yielded three 

 species of Argia^ namely mmsta ptttrida (Hagen), tibialis (Eambur), 

 and apicalis (Say) , their relative abundance being in the order named. 



Where the shores became sandy and less steep two species of 

 Gomphus^ vastus Walsh and fraternus (Say) were predominant, 

 flying over the water and patrolling the banks. Apparently these 

 two genera did not intermingle to any extent, but each was colonized 

 by itself. 



XIV. LANSING, lOWA, JULY 24. 



Only two species of Gomphus^ vastus Walsh, and externus Selys, 

 were seen at this station or along the river above and below it. 



