230 
ACTINOP'i'ERYGII. 
Prionolepis angustus, Egerton. 
1850. Prionolepis angustus, Egerton , in Dixon, Geol. Sussex, P- ’ 
pi. xxxii .» lig. 3. lx. 
1888. Prionolepis angustus, A.. S. Woodward, Proc. Geol. Assoc, a 0 
p. 306. 
Type. Dermal scutes ; British Museum. ,^ e 
The type species, known only by the scutes of the flank, 
largest scutes about seven times as deep as broad, an 
forwardly directed portion above the lateral line comparative y 
short; the hinder margin very regularly, closely, and ee P^ 
pectinated; the anterior portion either smooth or marked with ve 
feeble vertical ruga), except above the lateral line where these ru p . 
are conspicuous. 
Form. <Sf Loc. Turouian and Senonian : S.E. England. 
P. 9253. Type specimen, an imperfect mass of scutes chiefly 
from the inner aspect, briefly described and figure 
Egerton, loc. cit Lower Chalk, Burwell, near Newmar 
pixon Low- 
29040. Three fragments of chalk with remains of scutes, fll 
Chalk, Swaffham, Norfolk. m'4 
Presented by G. B. Rose, Es<[., 
46393. Group of scutes ; Lower Chalk, Caine, Wiltshire. 
Cunnington Low- 
35876. Imperfect scute ; Grey Chalk, Dover. Purchased , 
39058. Imperfect scute ; Chalk, Kent. Bowerbank Coll- 
49776. Remains of scutes more ornamented than usual, 
probably of this species ; Lower Chalk, Dorking. . 
Capron Low- 
Prionolepis cataphractus (Pictet & Humbert). 
1866. Aspidopleurus cataphractus, Pictet & Humbert, Nouv. 1 
Poiss. Foss. Mt. Liban, p. 109, pi. xviii. fig. 1. Dublin 
1887 . Aspidopleurus cataphractus, J. W. Davis, Trans. K°y. 
Soc. [2] vol. iii. p. 624, pi. xxxviii. fig. 4. e \ 
1887 . Engrauli s tenuis, J. W. Davis, ibid. p. 635, pi. xxx. fig- 1* 
1898. Prionolepis cataphractus, A. S. W r oodward, Ann. H ll "‘ 
Hist. [7] vol. ii. p. 411. 
Type. Imperfect fish ; Geneva Museum. a 
The type species of the so-called Aspidopleurus, attaining 
length of about 0-22. Length of head with opercular appara 
