656 



II. LAKE PIIALEN, ST. PAUL, MINNESOTA, JULY 8. 



This is a small lake northeast of St. Paul and partially outside the 

 city limits. Its western and northern shores are covered with prime- 

 val woods, while the southern and eastern banks are low and swampy 

 in places and clothed with dense underbrush. At the northwest 

 corner the lake is connected with another much smaller lake or pond 

 by a short stream which winds through an intervening strip of low 

 marshy ground. 



The banks of the smaller pond are densely wooded, except a narrow 

 strip along the shore and around the outlet. 



On the stream connecting the two bodies of water and around the 

 shores of the smaller pond the dragonfiies were especially abundant, 

 and most of the species recorded were collected there. 



The species of T etrag oneuria was the one most abundant on Lake 

 Phalen itself. 



1. ANAX JUNIUS (Drury). 



Fairly conmion around the shore ; several seen closely enough for satisfac- 

 tory identification, but none captured. 



2. ^SHNA JUNCEA VERTICALIS (Hagen). 



Fairly common; a female caught off the side of the trolley car just as it 

 stopped; body very beautifully colored when alive, but fades almost 

 immediately after death; actively feeding along the shore rather than 

 over the water. 



3. LIBELLULA PULCHELLA Drury. 



Very common ; sexes about equally abundant ; two females captured by 

 hand, which had evidently recently emerged from their pupa cases. 



4. LIBELLULA QUADRIMACULATA Linnaeus. 



Two females secured along the shore ; the only ones seen. 



5. CELITHEMIS EPONINA (Drury). 



A single pair captured, which were the only ones seen. 



6. GOMPHUS VILLOSIPES Selys. 



Common, squatting on the bare ground, logs, and rocks ; found in company 

 with G. spicatus, but is considerably larger ; strong and pugnacious, 

 catches and eats the smaller dragonfiies like Leucorhrnia and ^ym- 

 IJetrum. 



7. GOMPHUS SPICATUS Hagen. 



Three captured, all females; smaller than preceding but habits similar; 

 feeds largely on damselfiies, like EnaUagma and Ischnura. 



8. TETRAGONEURIA CYNOSURA (Say). 



Common everywhere ; all secured were males ;. hovers over the water but 

 rarely alights; very pugnacious, attacking and driving away (}ohiphus 

 and even ^shna. No spinigera seen at this lake, no cynosura at Lake 

 Amelia. 



9. ERYTHEMIS SIMPLICICOLLIS (Say). 



Two pairs secured, both sexes in full color and not yet beginning to become 

 pruinose. 



10. LEUCORHINIA INTACTA (Hagen). 



Counnon everywhere, the sexes about even in numbers. 



