﻿PLATE VI II. 



UPPER SILURIAN (WENLOCK). 



Figs. 1 — 6. Calymene tuberculosa, Salter [_Mus. Pract. Geology]. Burlington, 



Shropshire. 



1. „ „ Full grown. 



2. ,, „ Specimen figured in Decade 2, pi. v i Li, 



fig. I. 



3. „ „ Side view of the same. 



4. ,, ,, Coiled specimen, showing the labium im- 



perfect ; this is also figured in the 

 plate of Decade 2, above quoted. 



5. „ Young specimen. 



(i. „ ,, Another specimen, with the labrum in situ. 



Pigs. 7 — 10. ,, Blumenbachii, Brongn. Ordinary Dudley variety. 



7. ,, ,, The largest specimen known, the same that 



is figured in the original ' Silurian 



System,' and in 'Siluria,' both editions. 



(Cabinet of W. Matthews, Esq., junr., 



Edgbaston, Birmingham.) 

 8 u, b, c, „ „ Outlines of characteristic head and tail, 



from a Dudley specimen in Mr. E. 



Hollier's cabinet, Dudley. 

 9. ,, „ Labrum of the species, from the specimen 



figured in PI. IX, fig. 2. (Mils. 



Pract. Geology.) 



10. „ „ Very young Dudley specimen [C. pulchellu, 



Dalman ?), from Dudley. In the 

 Gray collection, Brit. Museum. 



11. ,, ,, Young Dudley specimen, same collection. 



12. „ „ Ordinary half-grown specimen, Dudley. 



(E. Hollier, Esq., junr.) 

 13 a, b. „ ,, Under view and side view of a fine spe- 



cimen in Prof. Tennant's cabinet. 

 Dudlev. 



14. ,, Specimen with coarse granulation. (Mus. 



Pract. Geology.) 



15. „ ,, Large granulated specimen of the full size. 



(Cabinet of E. Hollier, Esq., junr.) 

 Dudley. 



H) a, b. ,, „ Two views of very large coiled specimen, 



the granules much worn off. (Cabinet 

 of E. Hollier, junr.) 



