REPORT ON FOSSIL FISHES. 69 
EXPLANATION OF THE PLATES. 
Throughout these figures the same letters apply to the same bones. 
p. Parietal. op. Operculum, 
sq. Squamosal or dermal pterotic. z.op, Interoperculum, 
f. Frontal. p.op. Preoperculum. 
p.f. Posterior frontal or dermal sphenotic. br. Branchiostegal. 
a.f. Anterior frontal or dermal ectoethmoidal. s.0. Suborbital. 
e. Median superethmoidal. c.o. Circumorbital. 
p.me. Premaxilla. s.t. Supra-temporal. 
me. Maxilla. n, Nasal opening. 
pt. Pterygoid. or, Orbit. 
m.pt. Mesopterygoid. p.t. Post-temporal. 
hm. Hyomandibular. s.cl. Supra-clavicular. 
ar, Articular. el, Clavicle. 
ag, Angular. p.cl. Post-clavicular. 
d. Dentary. i.cl, Infra-clavicular. 
sp. Splenial. 
Puate I, 
Fig. 1.—Celacanthus Hucley?, Traquair ; natural size (p. 20). 
Fig. 2.—Another specimen, enlarged by one-half, 
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3.—Angular element of the mandible, magnified three diameters. 
4,—Sceales of Celacanthus Hualeyi, magnified six diameters. 
5.—Elonichthys serratus, Traquair ; natural size (p. 22). 
6.—Another specimen ; natural size. 
7.—Scales from the flank of Hlonichthys serratus, magnified six diameters, 
8.—Scales from the same species, towards the tail, magnified six diameters. 
9.—LElonichthys pulcherrimus, Traquair ; natural size (p. 24). 
0.—Scales from the flank of Hlonichthys pulcherrimus, magnified four diameters. 
1.—Scales of the same species, further back, magnified four diameters. 
2.—Surface of dorsal fin rays, magnified four diameters. 
3.—Restored outline of Rhadinichthys Geikiei, Traquair (p. 25). 
4.—Scales from the nape of the neck in Rhadinichthys Geikiei, magnified six diameters. 
5.—Flank scales, magnified six diameters. 
6.—The same, a less ornate variety, magnified six diameters. 
7.—Sceales situated further back, towards the tail, magnified six diameters. 
8.—Narrow abdominal scales, magnified six diameters. 
Prats II. 
1.—Rhadinichthys Geikiei, Traquair, var. elegantulus ; natural size (p. 27). 
2.—Scales of the same, from the nape of the neck, magnified six diameters. 
3.—Flank scales of the same, magnified six diameters. 
