﻿172 I1RTER0STRAC1. 



P. 3240. Two typical specimens preserved in ferruginous matter; 

 Kington. Enniskillen Coll. 



P. 3241. Well-preserved fragments of an apparently uucrushed 

 shield, the ornamentation of part of the disc being shown, 

 of twice the natural size, in PI. IX. fig. 3 ; Upper Silu- 

 rian Bone-bed, Martel, near Ledbury. Enniskillen Coll. 



The so-called Scaphaspis truncatus l or Pteraspis truncatus 2 ap- 

 pears to the present writer to be founded in part upon the detached 

 median discs of Cyathaspis banksi, and in part upon ventral, shields 

 that may probably be referred to this species. The following are 

 specimens of this character : — 



P. 683 a. Shield preserved in ferruginous matter, and the anterior 

 half of a similar specimen ; Downton Sandstoue, Kington. 



Egerton Coll. 



P. 3243. A complete, apparently uncrushed specimen, similarly pre- 

 served; Kington. Enniskillen Coll. 



42158. Impression of shield showing ornament ; locality unknown. 



Baugh Coll. 



P. 3244. Well-preserved fragment of shield, perhaps of this species ; 

 Ludlow Bone-bed, Ludford Lane, Ludlow. 



Enniskillen Coll. 



Cyathaspis macculloughi, sp. nov. 

 [Plate IX. fig. 4.] 



Type. Imperfect dorsal shield : British Museum. 



Median disc oblong, relatively narrow ; rostrum very short and 

 broad ; lateral cornua extending from the orbits backwards, broadest 

 mesially. Superficial striae relatively coarse, those of the disc uniform 

 and not interrupted with longitudinal costee. 



Form. Sf Log. Lower Old Eed Sandstone : Herefordshire. 



P. 4797. The type specimen, shown, of the natural size, in PI. IX. 

 fig. 4 ; England's Hill Quarry, Bodenham. A large por- 

 tion of the shield is preserved, being exposed from the 



1 E. E. Lankester, Fishes Old Eed Sandst. pt. i. (Pal. Soc. 1868), p. 24, 

 pi. ii. figs. 1-3. 



2 Huxley & Salter, Quart. Journ. Geol. Soc. vol. xii. (1856), p. 100. pi. ii. 

 fig.l. 



