n 83 
PALEONTOLOGY OF NEW-YORK. 
&ENUS EURYPTERUS. 
Eurypterus : Dekay, Annals of the Lyceum of Natural History of Nevv-York. 
Eurypterus : Harlan, Hibbert, Fischer, Conrad, Vanuxem, Burmeister, Rcemer, Eichwald, 
Pictet, M‘Coy, Salter, Huxley and others. 
Eidothea : Scouler. 
Lepidoderma : Reuss. 
HISTORICAL NOTICE. 
In 1825, the Genus Eurypterus was described by Dr. J. E. Dekay in the 
first volume of the Annals of the Lyceum of Natural History of New- 
York, page 375 ; and a pretty good figure of the Eurypterus remipes, the 
only species then known, is given on Plate xix of the same volume*. 
In 1831, Dr. Scouler described some fragments of a fossil crustacean, 
under the name of Eidothea, which were subsequently identified by Dr. 
Hibbert as Eurypterus (Edinburgh Journal of Natural and Geographical 
Science, Yol. iii, p.352). 
1832 : Leonhard & Bronn’s Jahrbuch. 
In 1835, Dr. Harlan, in his Medical and Physical Researches, and also 
in the Transactions of the Geological Society of Pennsylvania, Yol. i, 
p. 96 — 98, republished the generic description of Dr. Dekay, with the 
description of E. remipes; and described and figured a second species, 
E. lacustris, copying also the original figure of Dr. Dekay on Plate v of 
the same volume. 
H. G. Bronn (Lethea Geognostica, 1835, pa. 109, t. 9, f. 1 & 2), figures 
the E. remipes and E. scouleri. 
In 1836, Dr. Hibbert published, in the Transactions of the Royal 
Society of Edinburgh, Yol. xiii, pi. 12, an account of a very large species 
of this genus, giving figures of the same, and also reduced figures of the 
two American species from Dr. Harlan’s paper. This crustacean had been 
* The fossil had been previously described by Dr. S. L. Mitchell in the American Monthly Magazine, 
Yol. iii, p. 291; and, from its obscure condition, was regarded as a fossil fish of the Genus Silurus. 
