8 
ACAXTHODII, 
and slender, the head occupying about one sixth of the total length. 
Pectoral fin-spines relatively large, arched, and longitudinally 
striated ; pelvic fin-spines very small, about one fifth as large as the 
pectorals, separated from the latter by a space much less than one 
half of the distance between them and the anal. Dorsal and anal 
fin-spines almost directly opposed, of nearly equal size, and more 
than half as large as the pectoral spine. [Scales unknown.] 
Ihe 1 em ark able form of the head, as described by Sauvage, is 
doubtless due to imperfect preservation ; and the supposed lower 
jaw has much the appearance of the styliform cartilage termed 
ceratohyal by the present writer. j 
Form. <Sf Lodi ^Permian : Lodeve, France. 
Not represented in the Collection. 
Acanthodes wardi, Egerton. 
1866. Acanthodes zvardi, Sir P. Egerton, Quart. Journ. Geol. Soc. vol. 
xxii. p. 468, pi. xxiii. 
18/1. Acanthodes ivardii , J. Thomson, Trans. Geol. Soc. Glasgow, vol. iv. 
p. 57, pi. iv. 
1875. Acanthodes wardi, J. Ward, [Proc.] N. Staffs. Nat. Field-Club, 
p. 241. 
1876. Acanthodes zvardi, J. W. Davis, Quart. Journ. Geol. Soc. vol. 
xxxii. p. 335. 
1890. Acanthodes zvardi, J. Ward, Trans. N. Staffs. Inst. Mining Engin. 
vol. x. p. 157, pi. v. fig. 2. 
1890. Acanthodes zvardi, It. H. Traquair, Proc. Roy. Soc. Edinb. vol. 
xvii. p. 388. 
Type. Impelled fish j collection of JohnWhrd, Esq., Eongton. 
A species closely resembling A. hronni in form and proportions. 
Pectoral fin-spines broad and robust, much laterally compressed, 
with a single groove and faint ridge nearly parallel to the anterior 
border and disappearing distally; other spines similar. Pelvic fin- 
spines relatively small, about one quarter the size of the pectorals ; 
pelvic fins extremely elongated, arising at a point about three 
quarters as far from the pectoral fins as from the anal. Anal fin- 
spine half as large as the pectoral; dorsal still slightly smaller, 
placed a shoit distance behind the anal. Scales smooth, sometimes 
faintly hollowed mesially. 
Form. Sf Log. Coal-Measures : Staffordshire and Scottish Coal¬ 
fields. « 
36891. Remains of small fish, displaying proportions of pectoral and 
pelvic fin-spines ; Deep-mine Ironstone, Longton, N. Staf¬ 
fordshire. Purchased, 1862. 
