July, '08] ENTOMOLOGICAL NEWS. 305 



albifrons, a species which has not been taken at the Vanemon 

 Swamp since 1902, though it has been looked for carefully each 

 year. It is possible the deepening of the outlet and the con- 

 sequent drying up of the marsh in summer may have caused 

 the disappearance, though the other swamp where S. albifrons 

 occurs has been more modified in recent years than the Vane- 

 mon Swamp and during 1907 the capture of a single male there 

 showed the species had not entirely disappeared from the 

 county. I collected first about the Vanemon Swamp in 1900. 

 From that year up to 1907 no Enallagmas were ever observed 

 there. The first visit to the swamp in 1907 was on June 16. 

 The swamp was reached only late in the afternoon after a 

 day spent along the Wabash River. To my surprise a number 

 of Enallagmas were seen. As many of these as possible were 

 taken and later examination showed 43 $ and 15 $ of Enal- 

 lagma calvcrti and 2 $ of Enallagma cyathigcrum. Again on 

 the afternoon of June 18, 34 $ and 10 9 of E. calverti and a 

 pair of E. cyathigemm were collected. On another date Enal- 

 lagma aspersum was plainly seen but not taken. E. cyathigcrum 

 has not before been reported for Indiana and . calverti is 

 known only from Lake Maxinkuckee. Repeated visits to sev- 

 eral swamps and old gravel pits failed to locate any other 

 colonies of E. calverti or cyathigerum. Libellula quadrimacu- 

 lata, hitherto never seen about the Vanemon Swamp, was abun- 

 dant in 1907, and a single $ of Libclhda vibrans, a new in- 

 habitant, was also taken. 



On both afternoons, when collecting Enallagmas, I saw for 

 a minute an Aeshna which flew leisurely once about the marsh 

 and disappeared in the tree-tops. As it flew towards me, even 

 at some distance, I saw by the brilliant blue of the eyes that it 

 was a species entirely unknown to me. On June 23, I was at 

 the swamp early in the morning. As soon as I arrived T 

 noticed Aeshnas flying low over the marsh. A small patch of 

 spatter-dock in open water was repeatedly visited, the Aeshnas 

 flying slowly in and out, with much stationary fluttering among 

 the leaf stems. Two males were soon captured and no others 

 made their appearance. Eight subsequent visits were made to 



