PLATE XXVII. 



WOOLHOPE AND WENLOCK ROCKS (UPPER SILURIAN). 



Figs. 1 — 5. IllcBnus {Bumastus) Barriensis, Murchison. 



\ a,\ b. „ „ „ Direct and side views of the fine head 



(Pp. 203— 207.) figured in Decade 2, pi. iv, 'Mem. 



Geol. Survey.' Woolhope. (Mus. P. 

 Geol.) It shows well the great glands 

 (or muscle-spots ?) over the eyes, and 

 the strong sculpture, even on the cast. 



2, upper figure „ „ Large head, wanting the free cheeks. 



Woolhope shales of Malvern Tunnel. 

 (Dr. Grindrod's Collection.) 



2. lower figure „ ,, Miss Jukes' original specimen. From 



Barr, Stafibrdshire. An unequalled 

 example, of which casts are in all 

 museums. Woolhope limestone. 



3. „ „ Young specimen, front view, to show 



flatness of head. (Dr. Grindrod's 

 Collection.) Malvern Tunnel. 



4. „ „ „ Younger still. Woolhope. (Mus. P. 



Geol.) 



5. „ „ „ Side view of young head. (Dr. Grind- 



rod.) Malvern Tunnel. 



Pigs. 6, 7. Jllcenus {Bumast.) insignis. Hall {II. pomatia on plate). 



6. „ „ „ Pig. 6 is Dr. Grindrod's exquisite speci- 



(P. 207.) men from Ledbury, Herefordshire. 



Wenlock limestone. 



7- „ „ „ Labrura, from Dudley. (Gray's Col- 



lection, British Museum.) 

 Figs. 8, 9. Illanus {Buntast.) carinatus, Salter. Prom the Wenlock limestone 



(P. 209.) of Winnings Quarry, Malvern. (Pre- 



sented to the ]\Ius. P. Geol. by the 

 late Rev. P. Dyson.) 



8- „ Pree cheek, eye, and broken spinous 



head-angle. 



9- „ „ „ Upper view of head, showing carinated 



form of same, and the axal puncta. 



