15 
Obs. — Since the last description of Myriolepis from the Hawkesbury 
Formation of New South Wales, 1 a small species of this genus has heen 
discovered in the Coal Measures of Ireland. 2 Another new sjiecies occurs 
in Mr. Dunstan’s collection from St. Peter’s. 
Myriolefis pectinata, sp. nor. 
Plate III, Figs. 2, 3. 
Obs. — All the remains of this large species are very fragmentary, and 
it is only necessary to refer to three specimens, namely : — 
(a) The type specimen (PI. Ill, Fig. 2), which exhibits the greater part 
of the trunk, with traces of the head and fins. 
( b ) A fragment of abdominal region, displaying the scale-ornament 
(PI. Ill, Fig. 3). 
(c) A fragment of caudal region, showing hinder part of dorsal fin. 
Sp. Char. — A stout species attaining a length of about 0‘7 m. 
Maximum depth of trunk contained about three times in the length from 
the pectoral arch to the base of the caudal fm ; the same measurement 
equalling the distance from the origin of the pectoral fins to a point just 
behind the origin of the pelvic fins. Pelvic fins situated as in the type species, 
but the dorsal fin apparently more remote, being partly opposed to the anal 
fin. Principal flank-scales in abdominal region much deepened ; dorsal and 
ventral scales scarcely broader than deep ; all scales ornamented with a few 
coarse horizontal ridges, which sometimes bifurcate in front. 
General Form.— The type specimen (PI. Ill, Fig. 2) appears to lie 
only slightly distorted, and probably justifies the statement of proportions 
given above. The length of the head is not indicated. The body must have 
been much laterally compressed. 
Head . — The remains of the head show that some of the external 
bones were ornamented with closely arranged, large tubercles, others with 
rounded ridges. The great obliquity of the mandibular suspensorium is 
evident ; and some of the smaller clustered conical teeth are seen in impression 
'A. S. Woodward, “The Fossil Fishes of the Hawkesbury Beds at Gosford,” Mem. Geol. Surv. N. S. 
Wales, No. 4 (1890), pp. 7-11, PI. II, Figs. 3, 4 ; PI. Ill, Figs. 1-3. 
2 R. H. Traquair, “ On a new Paleeoniscid Fish, Myriolepia hibemicus, sp. nov-, from the Coal Measures, 
Co. Kilkenny, Ireland,” Geol. Mag., [3], x (1813), p. 51, PI. III. Also H. Bolton, “Note on Myriolepin 
hibernica, Traq.,” Trans, Manchester Geol. Soc., xxii (1894), pp. 1-4, Pis, I, II, 
