PLATE XXX. 



SILURIAN CRUSTACEA. 



Order — Merostomata. 



Sub- Order — Eurypterida. 

 Fig. 

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



1 &2. H. Umuloides, H. Woodw. (P. 174.) 



Lower Ludlow ; Leintwardine. 



1. Preserved in the Museum of Practical Geology, Jenny n Street. 



2. Preserved in the British Museum. 



3. Fragment of a head-shield of Hemiuspis. Brit. Mus. 



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



Lower Ludlow ; Ledbury. 

 Coll. British Museum. 



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



Lower Ludlow ; Leintwardine. 

 Coll. British Museum. 



6. Ilemiaspis horridus, H. Woodward. (P. 179.) 



Wenlock Shale ; Dudley. 

 Coll. British Museum. 



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



Uppermost Silurian ; Lesmahagow, Lanarkshire. (P. 1G0.) 

 Coll. British Museum. 



9. Eurypterus scorpioides,H. Woodw. Counterpart of fig. 1, PI. XXIX. (P. 15*2.) 



Uppermost Silurian ; Lesmahagow, Lanarkshire. 

 Coll. British Museum. 



