6 BKITISH FOSSILS. 



Explanation of Plate X. 



Figs. 1-6. Paradoxides Davidis, Salter, various fragments from the Lower Lingula 

 Elags of St. David's. 



Eig. L Large glabella, showing two complete furrows, and one incomplete pair (this 

 last is doubtful), and other specimens do not confirm it. 



Fig. 2. Tolerably complete head, with the labrum, a, turned upward from the lower 

 surface at b ; the suture between the labrum and the hypostome is seen to be 

 soldered. 



Fig. 3, Labram of large specimen. 



Fig. 4. Hinder body rings showing the gradually lengthening points of the pleurse, 

 completed from more perfect specimens. (See Quart. G-eol. Journ., 1864, 

 vol. XX., pi. 13.) This variety has the last pleura abbreviated. 



Fig. 5. Posterior body rings. 



Fig. 6. (Not numbered on the plate.) Head spine of the largest specimen known. 



All the above, except fig. 2, are in the Mus. Pract. Geology. Fig. 2 is in the 

 cabinet of Mr. J. E. Lee, Caerleon- The ornament of its pleurse is seen in 

 the magnified figure. 



Fig. 7. Outline, restored from the largest fragments, and nearly coinciding with the 

 size of the largest and nearly perfect specimen since foun^, and placed in 

 the British Museum. 



Fig. 8. Body rings of a very large individual. (Mas. Pract. Geology.) 



Fig. 9. Paradoxides Forchhammeri, Angelin ? From the black Lingula flags of 

 N. Wales, Locality unknown, probably Dolgelly. (Mus. Pract. Geology.) 



November 1864. 



J. W. Salter, 



