April., 1901] Hine — Dragonflies of Sandusky. 95 



The genus Lestes is represented by unguiculatus, uncatus, dis- 

 junctus, forcipatus, rectangularis, vigilax, inequalis and eurinus. 

 Nearly all of these species are abundant and are mostly found among 

 the grass at the edge of the marsh. 



The genus Argia is represented by four species, putrida, violacea, 

 sedula and apicalis. The first two are very numerous in individuals. 



Nelialennia posita and Irene; Enallagma civile, ebrium, carun- 

 •culatum, aspersum, exsulans, geminatum, antennatum, signatum 

 pollutum; Amphiagrion saucium and Ischnura verticalis have all 

 been taken, usually near the water's edge. 



The Gomphines are not represented by a great number of species. 

 Oomphus vastus is exceedingly common, and fraternus, furcifer, 

 exilis, spicatus and plagiatus have been taken. Dromogomphus 

 spinosus is also common. 



Epiaeschna heros and ^sclina verticalis and constricta may 

 occasionally be seen, especially about the time the sun sets, catching 

 small insects for food. Anax Junius is the most conspicuous species 

 in the locality from May to September. 



Macromia illinoiensis is a very common species. At certain 

 times the males and females of this species may be found in numbers 

 in quiet places among bushes, where they come to rest on the under 

 side of branches, tlieir bodies being at an angle of about thirty 

 degrees with the branch. They are easily approached at such times, 

 and two females and four males have been taken at a single sweep 

 of the net. 



Epicordulia princeps, Tetragoneuria cynosura, Tramea Carolina 

 and lacerata and Pantala flavescens are occasionally seen. 



Neurocordulia yamaskanensis has only been taken once on 

 Rattlesnake Island. It is a rare species, but one that is more com- 

 mon it the northern states. 



The genus Libellula is represented by basalis, 4-maculata, semi- 

 fasciata, pulchella and incesta; and Sympetrum by obtrusum, 

 rubicundulum, vicinum, senicinctum and corruptum. 



Pachydiplax longipennis, Plathemis lydia, mesothemis simplici- 

 collis, Perithemis domitia, Leucorhinia intacta and Celethemis 

 eponina and elisa are abundant, and witli tlae members of tlie genus 

 Libellula furnish a very large percentage of the dragonfly life of the 

 Sandusky Marshes. 



