Br. S. Woodward — Contributions to Fossil Crustacea. 531 



the Chalk, " The Geology of the South-east of England," by G. 

 A. Mantell, p. 373,' (1833), 8vo. 



On referring to Mantell's work, we find a list of fossils given and 

 the genus Eryon quoted ; with a foot-note stating that the specimen 

 was " too imperfect for the species to be ascertained." As no figure 

 is given, nor does any Cretaceous Eryon exist among the Mantellian 

 Collection preserved in our National Museum, we may, I think, justly 

 conclude that the reference made by Dr. Mantell to Eryon as occur- 

 ring in the Chalk was erroneous. 



Although the specimen cited by the late Dr. Oppel failed to 

 establish the existence of the genus Eryon in the English Chalk, 

 I have been fortunate in fixing tfce presence of this genus in the 

 Neocomian of Silesia, 



When visiting the magnificent palseontological collections pre- 

 served in the Royal Bavarian Museum in Munich, in 1876, under 

 the direction of Dr. Oppel's eminent successor, Professor Dr. Karl 

 Zittel, I observed a most interesting and perfect example of Eryon 

 from the Lowest Cretaceous (Neocomian) of the Nortli Carpathians 

 of Silesia, which by the kindness of Dr. Zittel I was permitted to 

 study and describe. 



The fossil, which is preserved as an impression and counterpart in 

 two small blocks of hard black bituminous-looking limestone, exhibits 

 an entire Crustacean measuring nearly 35 millimetres in length, and 

 22 millimetres in breadth, having the carapace, all the segments of 

 the body, with the " telson," or tail-spine, the broad natatory caudal 

 appendages, and the great chelate fore-limbs united together as in life. 



This specimen was obtained in Feb., 1863, by Dr. L. Hohenegger, 

 the late Director of the Arch-Ducal Iron-works in Silesia, Galicia and 

 Hungary, from the Neocomian of Niederlishna, Silesia, and named 

 by him in MS. Eryon Neocomiensis. 



In describing the Lower Neocomian of this district [see Geognostic 

 Sketch of the North Carpathians of Silesia and the adjacent district, 

 brought up to the present state of our knowledge, by L. Hohenegger 

 (Jahrbuch der k. k. Geologischen Reichsanstalt, Band 3, 1852, Wien, 

 Eoyal 8vo. pp. 135-148, Taf. I.)], Dr. Hohenegger writes: — 



" The identity of the small but numerous patches of ' Coral Lime- 

 stone ' in this district, with the Limestone of Stramberg, near 

 Neutitschein, is now established beyond a doubt, by means of the 

 fossils which have been obtained. They may be correlated with 

 the Ignazi and Horki Mountains in Moravia and Tichau, Chlebowitz, 

 etc., in Neutitschein. 



" Although the fauna of this place does not everywhere show 

 exactly the same facies, nevertheless it embraces the characteristic 

 bivalves which place its identity beyond all doubt. Besides which, 

 these ' Coral Limestones ' all resemble one another both in their 

 mechanical and chemical constitution, although they vary from the 

 purest white to blackish-grey in colour : which latter tint " [as well 



1 The other references given by Dr. Oppel, viz. to Meyer in Nova Acta Leopold. 

 Carol. Acad. p. 283, and to Morris, Cat. Brit. Fos. 1854, p. 108, are but the repe- 

 tition of the same reference to Mantell. 



