CEPHALASPIDJ3. 
181 
^ P. 672. Flattened imperfect specimen ; Downton, near Ludlow. C. ^ j , 
, Egerton ColL 
X P- 5048. Partially crushed and broken shield, wanting right cornu ; Ca^j 
Downton. Presented by John Edward Lee , Esq., 1885. 
P. 4115- Small crushed shield, wanting the external layers and 
showing the orbits placed as far backwards as in the type 
V"-"" specimen ; Abergavenny. 
l/G- 
Presented by Dr. D. M. McCullough , 1883. 
42142. A very small shield, in counterpart, probably young of this 
*>- species ; Heightington. Baugh Coll. 
^ ^ UvvwUvv- tw 
46568-69, 4687^78. Four ver}' small, much crushed shields, 
doubtfully referable to young of this species; Cradley. 
^ Purchased, 1875. 
x V 
^ 37388. Middle portion of shield either of this species or of C. salweyi; 
Heightington. Purchased, 1863. 
Cephalaspis salweyi, Egerton. 
1857. Cephalaspis salweyi , Sir P. Egerton, Quart. Journ. Geoi. Soc 
vol. xiii.lp. 283, pi. x. fig. 1. 
1859. Cephalaspis asterolepis, It. Harley, Quart. Journ. Geol. Soc. vol. 
xv. p. 503. 
1859. Cephalaspis salweyi, R. Harley, ibid. p. 504. 
1868. Cephalaspis asterolepis, J. W. Salter, Proc. WoolhopeNat. Field 
Club, p. 240, and frontispiece. 
1870. Zenaspis salweyi, E. R. Lankester, Fishes Old Red Sandst. pt. i. 
(Pal. Soc.), p. 52, pi. xii. figs. 2, 5, 6 (non pi. viii. figs. 2-4), woodc. 
figs. 26, 28 (non fig. 27). 
1881. Cephalaspis asterolepis , H. Woodward, Geol. Mag. [2] vol. viii. 
p. 193, pi. vi. 
Type. Middle portion of shield ; Ludlow Museum. 
The largest known species, the shield sometimes attaining a total 
length of 0*18. Shield sharply rounded in front; orbits placed 
nearly midway between the anterior and posterior margins; cornua 
well developed, slender, and acutely pointed. Superficial tubercu- 
lations relatively large, sparsely and irregularly arranged. 
The detached tuberculated plates, doubtfully assigned to this 
species by Lankester, are truly referable to Coccostean fishes (see 
Phlyctcenaspis anglica, p. 296). 
Form. Loc. Lower Old Red Sandstone (Cornstones) : Here¬ 
fordshire, Monmouthshire, and Worcestershire. 
