PLATE 73.

Fig. 1. Lateral view of a fragment of the tail, sheathed by haemal and neural keeled scutes, between which are the remains of a lateral series of small peltate scute tubercles. The vertebral centra, c.c'., are overlaid by bundles of ossified tendons, t.

Fig. 2. Sectional view of the fractured surface at c'. c. Crushed centrum. hh Hoemal and neural scutes.

Fig. 3. Foreshortened view of scute at x. b, marks the same border in. this and in fig. 1.