884 PAL5:0iNT0L0GY OF NEW-YORK. 



In 1854, EiCHWALD ( Bulletin de la Soc. Imp. des Naturalistes de Mo- 

 8C0U, No. 1, pa. 100, pi. 1), published a series of illustrations of the E. 

 tetragonophthalmus of Fischer, from the Island of CEsel, erroneously re- 

 ferring it to the E. remipes of Dekat. 



PiCTET ( Traite de Palteontologie, 1854 ), has copied the figure of Dr. 

 Il(EMER, referring it erroneously to E. remipes of Dekat. 



In 1855, M'CoY ( British Palajozoic Fossils of the Cambridge Museum, 

 pa. 175, pi. 1 E, f. 1), described and figured the carapace of a species of 

 Eurypterus under the name E. cephalaspis, the Homalonotus cephalaspis of 

 Salter. 



The Lepidoderma imhofi ( Reuss, Denkschriften Akad. Wiss. Wien, Vol. 

 X, pa. 81, pi. 3, 1855), is undoubtedly a species of Eurypterus, approaching 

 in character to E. lacustris. 



In 1856, Notice of the occurrence of Eurypterus in the rocks of Le- 

 smahago, by Sir R. I. Murchison ( Quarterly Journal of the Geological 

 Society, Vol. xii, pp. 23 & 24 ) : Lesmahago silurianus, Morchison. 



Mr. Salter, in his paper on some new Crustacea from the uppermost 

 Silurian rocks (Quarterly Journal of the Geological Society, 1856, Vol. 

 xii, pp. 26 & 27), refers to the Genus Eurypterus. The figures 4 and 5 on 

 page 28, referred to Himantopteris acuminatus and H. lanceolatus, bear all 

 the characteristics of similar parts of the body of Eurypterus. See also a 

 note following this paper, on the structure and affinities of Himantopterus, 

 by T. H. HcxLET. 



In 1858 — 59, Mr. Salter ( Quarterly Journal of the Geological Society, 

 Vol. XV, Part 2, pa. 229, pi. 10 ) , gives a notice of the genus and the 

 previously described species, and adds six new species to the list before 

 known*. 



* See Summary at the end of Descriptions. Mr. Saltrb has fallen into an error in referring the E. remi- 

 pt$ and E. lacuttrU to the same locality, viz. Williamsville, Eric county, M.T. ( loc. cit. pp. 230 & 285). 

 The E. remipet occurs in Central New-York, near the village of Waterville in the town of Westmoreland, 

 Oneida county, and in the neighborhood of that place. The E. lacuttrit occurs in the same geological 

 horizon near Williamsville and other localities east of Butfalo in Erie county, New-York. 



