ASTEROLEPIS MAXIMA. 



85 



of the left plate (PI. XVII, figs. 5 and 6 in impression, and woodcuts, Figs. 47 and 

 48 restored) shows a convex inner border, which in most cases passes by an 

 almost uninterrupted curve round the front on to the antero- external angle ; the 



Fig. 47. 



Fig. 48. 



Fig. 49. 



Fig. 50. 



Fig. 47. — Superficial aspect of ventral lamina of left posterior ventro-lateral plate, s., articular surface 

 for anterior ventro-lateral. 



Fig. 48. — Deep aspect of ventral lamina of left posterior ventro-lateral plate, t., articular area for 

 median ventral plate ; u., area for articulation with the posterior ventro-lateral of the opposite side. 



Fig. 49. — Superficial aspect of ventral lamina of right posterior ventro-lateral. v., surface covered by- 

 anterior ventro-lateral; w., surface covered by the posterior ventro-lateral of the left side. 



Fig. 50. — Deep aspect of the ventral lamina of the right posterior ventro-lateral plate, x., articular area 

 for overlapping the median ventral. 



outer border is gently and elliptically convex as far as the commencement of the 

 posterior fourth of the entire length, where it slightly alters its direction, forming 

 a slight re-entering angle, and finally rounds off into the very short posterior border. 



