3S» PALiEONTOLOGY OF NEW-YORK. 



Cesi's £i ryi>terus. 



Eurypterus : Dkkat, Annals of the Lyceum of Natural History of New-York. 



Earypterus : Haki.an', Hibbkrt, Fischkr, Conrau, Vanlxkm, Bukmkistke, Uujiikb, Eichwald, 



PicTKT, M'Cor, Saltbe, Huxlkt and others. 

 Eidothea : Soouler. 

 Lepidoderma : Rscss. 



HTSTOIIICAL 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, Vol. 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, Vol. i, 

 p. 9G - 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, Vol. 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, 

 Vol. iii, p. 291 1 and, from its obscure condition, was regarded as a fossil fish of the Genus Sildrus. 



