April, 1901 ] 
Hine — Dragonflies of Sandusky. 
95 
The genus Lestes is represented by unguiculatus, uncatus, dis- 
junctus, forcipatus, rectaugularis, 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. 
Nehalennia posita and irene; Enallagma civile, ebrium, earun- 
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. 
Oomph us vastus is exceedingly common, and fraternus, furcifer, 
exilis, spicatus and plagiatus have been taken. Dromogomphus 
spinosus is also common. 
Epiaeschna heros and iEschna 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, their 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 with the members of the genus 
Libellula furnish a very large percentage of the dragonfly life of the 
Sandusky Marshes. 
