﻿PLATE XXX. 



SILURIAN CRUSTACEA. 



Order — Merostomata. 



Sub- Order — Eurypterida. 



Fig. 



1 — 7. Hemiaspis, H. Woodward (nat. size). 

 1 & 2. II limuloides, H. Woodw. (P. 174.) 



Lower Ludlow ; Leintwardine. 



1 . Preserved in the Museum of Practical Geology, Jermyn Street. 



2. Preserved in the British Museum. 



3; Fragment of a head-shield of Hemiaspis. Brit. Mus. 

 4. H Salweyi, Salter. (P. 179.) 



Lower Ludlow ; Ledbury. 

 Coll. British Museum. 



5&7. H speratus, H. Woodw. (P. 178.) 



Lower Ludlow ; Leintwardine. 

 Coll. British Museum. 



6. Hemiaspis hprridus, H. Woodward. (P. 179.) 



Wenlock Shale ; Dudley. 

 Coll. British Museum. 



8. Eurypterus obesus, H. Woodw. (nat. size). 



Uppermost Silurian ; Lesmahagow, Lanarkshire. (P. 160.) 

 Coll. British Museum. 



9. Eurypterus scorpioides,R. Woodw. Counterpart of fig. 1, PI. XXIX. (P. 152.) 



Uppermost Silurian ; Lesmahagow, Lanarkshire. 

 Coll. British Museum. 



