il 
portions of two of the slightly enlarged ridge-scales in front of the dorsal fin 
are shown in PI. II, Eig. 4. They are oval in shape, and ornamented with 
fine concentric ridges. 
Genus — ELONICHTHYS, Giebel, 1848. 
(Fauna der Vorwelt, Fische, p. 249.) 
Gen. Char . — Trunk more or less deeply fusiform. Mandibular 
suspensorium very oblique ; jaws stout and dentition powerful, a close series 
of small conical teeth, with a spaced series of large conical teeth within. 
Eins large, with fulcra, the rays branching distally, covered with ganoine, 
and the more robust sculptured ; pectoral rays all articulated ; pelvic fins 
with short base-line ; dorsal opposed to space between pelvic and anal fins ; 
upper caudal lobe much produced, the fin deeply forked and inequilobate. 
Scales very slightly overlapping, covered with ganoine, more or less sculptured ; 
ridge-scales immediately in front of median fins much enlarged. 
Obs . — This genus is represented by several species, ranging from the 
Lower Carboniferous to the Lower Permian, both in Europe and North 
America. Two species also occur in a sandstone, apparently of Carboniferous 
age, at Mansfield, Victoria, Australia.* 
ELONICHTHYS AltMATUS, sp. UOV. 
Plate III, Fig. 1. 
Obs . — The type specimen (PI. Ill, Eig. 1) is the only example of this 
species worthy of description. 
Sp. Char . — A comparatively elongated species, attaining a length of 
about 0G5 m. Maximum depth of trunk contained somewhat more than 
three times in the length from the pectoral arch to the base of the caudal 
fin. Ein-rays very stout, and some at least ornamented with few oblique 
ridges ; pelvic fins arising midway between the pectoral and anal fins. Scales 
relatively large and thick, those of the middle of the flank in the abdominal 
region considerably deeper than broad ; none posteriorly serrated. Scale- 
ornament consisting of a few large oblique ridges, which extend backwards 
* A. S. Woodward, Mem. National Mus. Melbourne, No. 1, 1906. 
