Dr. Rk. H. Traquair—A New Paleoniscid Fish. 50 
Both are from the Coal-measures, Jarrow Colliery, Co. Kilkenny, 
Ireland. 
The Manchester specimen (PI. III.) is imperfect, being broken off 
about half an inch behind the anal fin; the dorsal fin is also deficient ; 
but its position is indicated by the subjacent fin-supports. The 
pectoral, ventral and anal fins are present. 
The measurements are as follows :— 
Entire length of the specimen, so far as preserved ... 74 inches. 
From tip of snout to origin of pectoral fin ... ... 2 ,, 
Wee! SN og 00h gy 
3s beginning of pectoral to beginning of ventral... 24 ,, 
ventral to beginning OH GME gag US og 
Depth of body at origin of ventral fin Bh os 
Length of head to posterior margin of gill cover... 22a 
The head shows scarcely any detail, though it is at once apparent 
that its structure was typically Paleeoniscoid, with anteriorily placed 
orbit, oblique suspensorium, and wide gape. Its length is contained 
34 times in the total up to the tail pedicle, where the specimen is 
broken off. 
The rather deeply fusiform body is shown to have been covered 
with rhombic scales which were exceedingly small in proportion to 
the size of the fish, those in the front of the flank measuring only 
zs Inch in height and breadth; only feeble traces of a striated 
ornament are observable on them. Some large median scales are 
seen in front of the dorsal fin. 
The scales must also have been very thin, as they have allowed 
the contour of the bones of the internal skeleton to be tolerably 
distinctly indicated through them—these indications being in the 
form of impressions of vertebral arches and spines, and of inter- 
spinous bones or fin-supports. The skeleton as thus exhibited is 
typically paleeoniscoid. 
The fins which are preserved are-of moderate size, even small 
for the size of the fish. The pectoral is not completely shown, 
though enough is preserved to show that it consisted of numerous, 
fine, closely set rays which were also closely articulated, the principal 
rays being also jointed up to their origins. The ventral fin is small 
and narrow, with fine rays of a character similar to those of the 
pectoral. The anal is triangular-acuminate, its hinder margin some- 
what concavely excavated, and consists likewise of numerous fine, 
closely-set rays, whose transverse articulations are extremely close. 
The dorsal fin is not preserved, but judging from the position of its 
supporting ossicles, it must have occupied a position nearly opposite 
the interval between the ventral and anal. 
The specimen in the Museum at Jermyn Street, London, represents 
a slightly larger specimen, the length from the front of the head to 
the posterior termination of the base of the anal fin being 84 inches. 
Here the specimen is broken off, nearly at the very place where the 
same has happened to the specimen at Owen’s College. However, 
the dorsal fin is preserved and shows a contour and structure similar 
to those of the anal in both specimens. 
