EUPHOBERIA FEROX. 173 



that figured and described by Mr. Salter as Eurypterus ? ferox, and by Mr. Westwood 

 as the " larva of some unknown insect." See Woodcut, Eig. 62. 



Messrs. Meek and Worthen provisionally refer their specimen to the Myriapoda and 

 to their genus Euphoberia, under the name of Euphoberia ? major, M. and W. 



A smaller species of Euphoberia, also armed with forked spines, named E. armigera. 

 was found in the Coal-measures of Grundy, County Illinois, and is described in the same 

 work by Messrs. Meek and Worthen. A specimen equalling in size their E. armigera 

 was figured and described by the writer in the ' Geological Magazine,', 1871, vol. viii 

 (pi. iii, fig. 6, p. 97), from the Coal-measures near Glasgow, under the name of E. 

 Brownii. 



Messrs. Meek and Worthen write as follows respecting their specimen of Euphoberia ? 

 major (see Woodcut, Fig. 62) : 



" We unfortunately yet know it only from fragments, one of the best of which is 

 represented by the annexed cut. If as long in proportion as the other species, it probably 

 attained a length of twelve to fifteen inches, and must have presented a formidable 

 appearance. The node-like prominences marked n in the figure are evidently the bases 

 of spines that have been broken away. One of these, however, is seen lying in the 

 matrix at the point marked s. Another specimen shows a direct view of the dorsal 

 side compressed flat. In this traces of two rows of these node-like prominences are seen 

 along the middle, while a row of spines can be seen projecting out into the matrix on 

 each side. This latter specimen so nearly resembles a fossil figured by Mr. Salter, in the 

 ' Quarterly Journal of the Geological Society of London/ vol. xix, p. 84, fig. 8, from the 

 Staffordshire Coal-measures, under the name of Eurypterus {Arthropleura) ferox, that we 

 can scarcely entertain a doubt that they are congeneric. Indeed if it were not for the 

 fact that the species /<?ro<r has its spines provided with three instead of two prongs, we 

 would even suspect that our specimens might possibly belong to the same species. 



" Mr. Salter thought his specimen probably a part of the central lobe of a trilobate 

 Eurypterus or some allied genus, an opinion he would not have entertained for a moment 

 (provided we are right in our suggestion respecting its relations to our fossil), if he had 

 seen a specimen showing a side-view of even a few of the segments with their legs 

 attached. At any rate our fossil is certainly distinct from the genus Arthropleura of 

 Jordan and Von Meyer, which is almost beyond doubt a Crustacean." 1 



After carefully examining the English E. ferox of Mr. Salter, and comparing it with 

 Messrs. Meek and Worthen's figure and description, I am disposed fully to agree with 

 the latter writers, and to refer it to the Myriapoda and to their genus Euphoberia, 

 feeling certain that it has no relation whatever with Eurypterus. 



Having in the first part of this Monograph placed E. ferox in the list of species given 

 on p. 15, it seemed desirable to show the reason why it should no longer be so retained 



1 Op. cit., p. 558. 



