78 



OLD RED SANDSTONE FISHES. 



irregular inner one articulates with the median occipital and post-median behind, 

 then it shows about the middle a wide rounded notch, which forms the external 

 boundary of the orbit, in front of which it articulates with the pre-median (p. m.) ; 



Fig. 37. Fig. 38. 



p. VI. 



Fig. 39. 



m.cf. 



Fig. 37. — Restored figure of Asterolepis maxima ; dorsal surface. The thin lines in this and Pigs. 35 

 and 36 represent the edges of the plates which are overlapped, and therefore concealed. Lettering as in 

 Figs. 34, 35, and 36. 



Fig. 38. — Restored figure of Asterolepis maxima, ventral surface. 



Fig. 39. — Restored figure of Asterolepis maxima, lateral view, the arm supposed to be removed, b. p., 

 brachial process ; fr., brachial foramen. In this figure, by a mistake, the anterior dorso-lateral plate is 

 represented as overlapping the anterior ventro-lateral instead of the converse arrangement. 



its outer margin, slightly concave, articulates with the extra-lateral, the posterior 

 one with the external occipital and angular, while the still shorter anterior margin 

 forms part of the front of the cranial shield. Between the two laterals in front is the 



