22 ENTOMOLOGICAL NEWS [xxxii, '21 



cated. The most likely place to look for such colonies are the 

 Doster ponds, near Poneto, five or six miles southwest of 

 the Vanemon swamp, in the direction of the prevailing winds. 

 The Doster ponds are three artificial ponds lying near together 

 in an east and west row, with a shallow canal, circling- to the 

 south through woodland, joining the east and west ponds. A 

 fourth smaller pond lies just south of the west pond. These 

 ponds are of interest as furnishing the single male of Libellula 

 c.vusta ever seen in the county and at the same time when it 

 was taken, and never before or since, Lcitcorhinia frigida was 

 taken at the west pond associated with the Libellula. 



Leaving the Vanemon swamp, Mr. Waugh and I reached 

 the Doster ponds about eleven o'clock, where we were unable 

 to find either Enallagma calverti or cyathigerum. At the west 

 pond, the shallowest one, we took Enallagma hagcni and 

 ebrinm, and at the east pond tra-inahtm, c.vsulans and anten- 

 natnm, neither of the two taken at the west pond being ob- 

 served here. No Emallagmas were seen at the middle pond, 

 but Trainca lacerata and Gomphus gmslinellus were seen at all 

 three ponds. At the east pond a single male Epicorduha prin- 

 ccps was patrolling the south side. 



We returned home about 1.30 o'clock and after a hurried 

 lunch I went to the ripple in the Wabash River, where last year 

 on June 8, Gomphus crass us and f rat emits were flying in num- 

 bers (ENT. NEWS, Dec., 1919). The afternoon was cloudy 

 and windy, but in about an hour I caught 22 males of crassus 

 and a single male of graslinellns. In 1919 about one-fifth of 

 the Gomplii captured at the ripple were fratcrnns, but not one 

 was seen this year, while graslineUiis, not seen in 1919, was 

 represented by a single male in 1920. At the ripple where the 

 Gomphi were taken the other dragontiies on the wing were 

 Hctaerina amcricana. Arc/la moesla, EiiaHagina antcninitiiin 

 and Ischnura vertically. 



To refer again to the Vanemon swamp, a complete list of 

 the dragonflies observed there during the past twenty years 

 may be of interest. No calopterygine, gomphine or corcluliiu- 

 has ever been seen at the swamp. The list follows : 



