22 BRITISH FOSSIL CRUSTACEA. 
The Zurypteride are placed by Prof. Milne-Edwards at the end of the order 
Cyproidea or Ostracoda. 
8. Dr. S. Hisserv’ in 1836 referred the crustacean remains described by Dr. Scouler 
under the name /dothea ({ 5) to the genus Hurypterus, with the specific name of Scouwlert. 
9. The Rev. Dr. Bucknann,” in 1886, described a fossil Limulus from Coalbrook 
Dale, under the name of L. trilobitoides. 
10. In 1838 Dr. S. Kurorea™ 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 Z. oculatus. 
1]. In 1838 Prof. Mrtnz-Epwarps” 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 per Hornven,” in 1888, gave an anatomical description of Limulus, 
and described four living and six fossil (Oolitic) species; the latter are all from 
Solenhofen. 
13. M. G. Fiscnzr pr Watpueim™ described a new species of Zurypterus from 
Russian Podolia, under the name of #. fetragonophthalmus, in 1839. 
14. In 1840 Mr. J. Presrwicn described and figured two new species of fossil 
Limuli, L. anthrae and L. rotundatus, from the clay-ironstone of Colebrook Dale 
Coal-field. 
15. In 1840 Count Miinsrrr” figured and described a fragment of a very large 
Limulus from the Solenhofen Slate of Bavaria, naming it Limulus giganteus. 
16. In 1841 Miinsrrr’® described and figured an imperfect specimen under the 
name of Limulus priscus, which has since been referred by H. von Meyer to his genus 
Falicyne. ‘The specimen is from the Muschelkalk of Wurtemberg. 
17. In 1841 Mr. Conran,” in New York, notices a single American specimen of 
Lurypterus (2. remipes), which he says when perfect had a long spiniform tail, like 
Limulus, but more obtuse and finely serrated. 
18. In 1843 Mr. Vanuxen ” figured a head and first articulation of 4. remipes, but 
added no new facts. 
19. In the same year General Portiock™ figures a specimen said to be from the 
Carboniferous Shale (“‘ most probably, however, Coal-measures,” Baz/y), Maghera, County 
Derry, doubtfully referred to Z. trilobitoides. 
20. Some fragments of a fossil—supposed at the time to be parts of fishes—were 
figured by Prof. L. Agassiz” (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, 
