Since the publication of the Odonata of Ohio, there have been several
species of dragonflies added to the State list, and we have had reasons
to change our minds regarding the identity of two species at least.
Enallagma Fischeri, Kellicott, is a synonym of Agrion antennatum, Say,
consequently the species will henceforth be known as Enallagma
antennatum, Say.
Our Gomphus lividus, Selys, is Gomphus sordidus, Selys, and Gomphus
externus, Selys, is Gomphus crassus, Hagen.
The following species have been added:
1. Lestes eurinus, Say, taken June 3, 1900, by E. B. Williamson in
Portage County. Numbers of both males and females of the species were
taken on Cedar Point, at Sandusky, July 10 of the present year.
2. Progomphus obscurus, Ramb., first taken at Ironton, June 1, 1899, by
R. C. Osburn. The present year I took several specimens at Vinton, June
10th.
3. Gomphus abbreviatus, Hagen, (?) was taken at Loudonville, June 10,
1899, by J. B. Parker and R. C. Osburn. The species was common at the
same locality June 14, of the present year.
4. Neurocordulia obsoleta, Say, has been taken at Cincinnati by Chas.
Dury and his associates for three consecutive seasons.
5. Neurocordulia yamaskanensis, Prov., was procured on Rattlesnake
Island in Lake Erie, June 28, 1900, by Prof. Osborn.
6. Nasiæschna pentacantha, Rambur, was taken near Kent, Ohio, June 21,
1900. In company with R. C. Osburn we procured three pairs of this
species. Others were seen.