Vol. 69.] PMiADOXIDES FROM NEVE's CASTEE. 47 



by two well-marked continuous furrows posteriorly, but bas iu 

 addition two pairs of faint lateral furrows on the anterior portion ; 

 and tbere is a tubercle on tbe occipital ring. 



Locality and horizon. — Neve's Castle (Shropshire), near the 

 southern end of the Wrekin. Middle Cambrian. 



Paradoxides hicksi Salter. (PI. IY, figs. 1-5.) 



1865. J. W. Salter, Rep. Brit. Assoc. (Birmingham) p. 285. 



1868. J. W. Salter & H. Hicks, Q. J. G. S. vol. xxv (1869) p. 55 & pi. iii, 



figs. 1-10. 

 1883. G. Linnarsson, Sver. Geol. Uiulersokii. ser. C, No. 54, p. 14 & pi. iii, 



tigs. 1-5. 



Five of the cranidia from Neve's Castle, with two free cheeks and 

 a few other fragments, seem to indicate the presence of Salter's 

 •species in Shropshire : but the state of preservation of the specimens 

 is very different from that of the specimens obtained at St. David's. 



Four of the cranidia, with lengths varying from 15 to 25 mm., 

 have the characters of adult individuals, but do not exhibit the very 

 pronounced enlargement of the glabella beyond the anterior margin 

 that is shown in Salter's rigures {op. cit. pi. iii, figs. 1 & 2). The 

 fifth cranidium (PI. IV, fig. 4) is 12 mm. long, and shows characters 

 attributed to immature forms. 



The glabella is strongly convex, widest at about two-fifths of 

 its length from the front, and has the anterior of the four pairs 

 •of furrows just behind this point, not in advance of it, as shown by 

 Salter. In the immature form, however, this furrow lies farther 

 forward, and in agreement with the figures of the St. David's 

 specimens. 



The posterior furrows cross the axial line, but the others 

 are interrupted towards the middle; all, except the anterior pair, 

 ;are connected with the axial furrow. The occipital furrow is 

 bent a little forwards in the middle; and the occipital ring 

 is decidedly broader than the posterior glabellar lobes. 



The fixed cheek is but slightly convex, and the eye-lobe is 

 separated from it by a strongly marked parallel hollow. In the 

 largest specimen (fig. 2 a) the length of the eye-lobe is a third of 

 that of the cranidium ; in the medium-sized specimens (fig. 3) the 

 length of the eye-lobe is rather greater ; and in the immature form 

 {fig. 4) it is more nearly a half. The anterior border is narrow, 

 nearly straight on either side, and somewhat obscured in front by 

 rthe overhanging glabella ; but in the smallest head-shield the fold 

 stands clear of the glabella by a distance equal to about half its 

 width. 



The characters of the test are very well shown on specimen 

 No. 2376, from which fig. 2 was drawn. The glabella is quite 

 smooth on the frontal lobe, but granular on the central and pos- 

 terior portions. On the cheeks (tig. 2 d) the granulations become 

 •coarser, but are not so much elongated as is indicated in Salter's 

 figures {op. cit. figs. 1 & 2) ; on the occipital ring they are, however, 

 -elongated, and arranged more or less concentrically round a node 

 •or low tubercle in the middle of the ring (PI. IV, fig. 2 c). 



