662 PROCEEDINGS OF THE XATIONAL MUSEUM. -.ol. xj;xvi. 



2. PLATHEMIS LYDIA (Drury). 



Both sexes taken along the river bank. 



3. ARGIA MCESTA PUTRIDA (Hagen). 



A few in the open spaces close to the water's edge. 



4. ISCHNURA POSITA (Hagen). 



A few taken in company with E. hayeni and E. ebrium. 



5. ENALLAGMA HAGENI (Walsh). 



Fairly eonimon in the tall grass along the river banks. 



6. ENALLAGMA EBRIUM (Hagen). 



Found with E. hageni, but not so numerous. 



X. HOMER, MINNESOTA, .JULY 20. 



Very few dragonflies or damselflies seen; a few individuals of 

 Lihellida pulchella Drnry, Anax Junius (Drury), and Plathemis 

 lydia (Drury) observed flying across the river. Lestes vigilax 

 Hagen, L. rectangularis Say, and Argia moesta putrida (Hagen) 

 taken in small numbers along the river banks. 



XI. REEDS LANDING, MINNESOTA, JULY 18. 



1. ANAX JUNIUS (Drury). 



Common p;itrolling the shore or flying over the water. 



2. GOMPHUS FRATERNUS (Say). 



Both sexes captured along the sandy shores. 



3. GOMPHUS VASTUS Walsh. 



More specimens, including both sexes, of this species were here secured 

 than at any other locality on the river; the banks of the river with 

 alternating reaches of sand and gravel seemed peculiarly attractive 

 to these dragonflies. 



4. SYMPETRUM ALBIFRONS (Charpentier). 



Both sexes were captured in the tall weeds along the edge of the woods; 

 they seem to prefer shady spots. 



5. SYMPETRUM RUBICUNDULUM (Say). 



A single male was found in company with .'>J. alhifrons. 



6. CALOPTERYX MACULATA (Beauvois). 



Both sexes common along the steep banks where the grass reaches to the 

 water's edge and there is a swift current. 



7. CALOPTERYX .ffiQUABILIS Say. 



Both sexes of this damselfly were found in company with C. macuUita, but 

 were not so numerous. 



8. LESTES VIGILAX Hagen. 



Both sexes found in the tall weeds and grass back from the water; not very 

 common. 



9. LESTES RECTANGULARIS Say. 



Both sexes secured in company with L. vigilax. 



10. ARGIA MCESTA PUTRIDA (Hagen). 



A few specimens seen along the river banks. 



XII. LA CROSSE, WISCONSIN, .JULY 20 TO 22. 



Just to the north of the city the banks of the Mississippi are low 

 and swampy and traversed by numerous streams and bayous. The 



