Fig. I.— Salamander larva, a, l>, lateral lines. (After Wiedersheini ) 



Fig. 2.—Climatius scutiger, Egerton. pc, pector.al ; pz<, pelvic; a, anal ; d, dorsal fins; i.s., intermediate spines. 



Fig. 3. — Mesacanthus mitchelli, Egerton. Lettering as in Fig. 2. 



Fig. i,.—Acanthodes sulcattts, Ag. Lettering as in Fig. 2. (Figs. 2, 3, 4 after Smith-Woodward.) 



Fig. 5. — Cladoselache. a, pectoral ; b, pelvic fin. (After Bashford Dean.) 



Fig. t.—PUuracanthus {Henacanthus) Decheni, Of. a, b, skeleton of anal fins ; i, 11, in, hamal arches ; 1-6, segments of 



fin-radials. Right border pre-axial, left border post-axial. (After Fritsch.) 

 Fig. t .—Glyptohpis {Hohptychius) leptopterus, Ag. Endoskeleton of the second dorsal fin. b, basal ; r, radial ; /, segment 



of a longitudinal axis ; d./., traces of dermal fin-rays. (After Smith-Woodward.) 



Fig. Z.-Eusihenopieron Foordi, Wht. a, left pectoral fin ; b, pelvic fin ; b.s., basal segment of axis ; /./., post-axial process 



(radial?) ; p.r., pre-axial radial ; d.r., dermal rays ; p.b., pelvic bone ; j.a., jointed axis. (After Goodrich.) 



