﻿22 BRITISH FOSSIL CRUSTACEA. 



The Eurypterida are placed by Prof. Milne-Edwards at the end of the order 

 Cyproidea or Ostracoda. 



8. Dr. S. Hibbert 9 in 1836 referred the crustacean remains described by Dr. Scouler 

 under the name Eidothea (% 5) to the genus Eurypterus, with the specific name of Scouleri. 



9. The Rev. Dr. Buckland, 10 in 1836, described a fossil Limulus from Coalbrook 

 Dale, under the name of L. trilobitoides. 



10. In 1838 Dr. S. Ktjtorga 11 described and figured a head-shield of Limulus from 

 the Permian formation of the western slopes of the Ural Mountains (Government of Perm), 

 under the name of L. oculatus. 



11. In 1838 Prof. Milne-Edwards 12 took the opportunity to examine the eggs of 

 Limulus containing the young ones about to be hatched; he found that at this stage of 

 their development they present very little difference in the conformation of the anterior 

 portion of their body from that which exists in the adult ; but the abdominal portion of 

 the body bears only three pairs of appendages, and the long styliform tail (telson), so 

 remarkable in the adult, does not exist at all ; the form of the abdominal portion likewise 

 is equally different at this epoch. 



12. M. J. van der Hoeven, 13 in 1838, gave an anatomical description of Limulus, 

 and described four living and six fossil (Oolitic) species ; the latter are all from 

 Solenhofen. 



13. M. G. Fischer de Waldheim 15 described a new species of Eurypterus from 

 Russian Podolia, under the name of E. tetragonoplithalmus, in 1839. 



14. In 1840 Mr. J. Prestwich 16 described and figured two new species of fossil 

 Limuli, L. anthrax and L. rotundatus, from the clay-ironstone of Colebrook Dale 

 Coal-field. 



15. In 1840 Count Munster 17 figured and described a fragment of a very large 

 Limulus from the Solenhofen Slate of Bavaria, naming it Limulus gig anteus. 



16. In 1841 Munster 18 described and figured an imperfect specimen under the 

 name of Limulus priscus, which has since been referred by H. von Meyer to his genus 

 Halicyne. The specimen is from the Muschelkalk of Wurtemberg. 



17. In 1841 Mr. Conrad, 19 in New York, notices a single American specimen of 

 Eurypterus (E. remipes), which he says when perfect had a long spiniform tail, like 

 Limulus, but more obtuse and finely serrated. 



18. In 1843 Mr. Vanuxen 20 figured a head and first articulation of E. remipes, but 

 added no new facts. 



19. In the same year General Portlock 21 figures a specimen said to be from the 

 Carboniferous Shale ( :c most probably, however, Coal-measures," Baily), Maghera, County 

 Derry, doubtfully referred to L. trilobitoides. 



20. Some fragments of a fossil — supposed at the time to be parts of fishes — were 

 figured by Prof. L. Agassiz 22 (1844), from the Old Red Sandstone of Forfarshire. 

 " Deceived by the scaly aspect of a portion of the carapace, I at first," says Prof. Agassiz, 



