BRITISH FOSSILS, 



5 



ments might readily be mistaken for that species. The glabella, 

 however, is longer, of an urceolate shape, and with the furrows 

 reaching much further into it. The eyes are not quite so long, as 

 they do not reach to the base of the lower lobes, and they are set 

 quite close to the glabella, which is not the case in E. Emmrichii. 



The tail is longer and narrower ; the axis conical, with the ter- 

 minal segment developed. Our species is altogether an excellent 

 British representative of a genus common in Bohemia and Sweden. 



Locality and Geological Position.— Uffe'r Lingula Flags. 

 Penmorfa Church and Carreg Wen, Tremadoc, N. Wales. Ogof ddu, 

 near Criccieth. (Mus. P. Geol.) ^ • 



It may be as well to mention here that 10 species of Gonocoryphe 



are alreadv known in Britain. Nine are described in the forth- 

 «/ 



coming Memoir of Professor Ramsay on the Geology of North 

 Wales; and a fine species, with highly developed ornament, is found 

 in the Lower Lingula Flags of St. David's. As the genus must be 

 illustrated hereafter, I only give the names and references. 



C. invita, Salter, Mem. Geol. Surv., vol. iii., ined., pi. 4, figs. 5, 6, 7 ; pi. 7, fig. 6, 

 above described. 



C. abdita, id. pi. 5, fig. 13, Upper Lingula Mag, Ogof ddu, near Criccieth. 

 C. sp. id. pi. 5, fig. 14 (fig. 15 tail ?), same locality. 

 C. sp. id. pi. 5, fig. 16, same locality. 



C? simplex, pi. 5, fig. 17, Upper Lingula Flag, Penmorfa Church. 

 C. vexata, id. pi. 8, fig. 7, Lower ? Tremadoc Slate, Penmorfa village. 

 C. depressa,id. pi. 6, fig. 1, 2, 3, Lower Tremadoc, near Penmorfa Church, and Wern, 

 Portmadoc. 



C? verisimilis, id. pi, 6, fig. 13, Lower ? Tremadoc, above Penmorfa village. 

 C? olenoides, id. pi, 8, fig. 6, Upper Tremadoc, Garth, Portmadoc. 

 C. variolaris, id. Quart, Geol. Journ., vol. xx., pi. xiii., figs, 6, 7, Lower Lingula 

 Flags, St. David's, Pembrokeshire. 



Explanation of Plate VII. 



Figs, 1-4. Angelina Sedgivicki, Salter, in various states of compression, according to 



,the position in the slaty beds. (Mus. Pract. Geol.) 

 Fig, 5, Labrum of ditto in Mr. Homfray's cabinet. Upper Tremadoc, Garth Hill, 

 opposite Portmadoc. 



Fig. 6. Gonocoryphe invita, Salter. Upper Lingula Flag, Penmorfa Church, Tremadoc, 

 N. Wales. 



J. W. Salter. 



November 1864. 



