14 



JOHAN 



[SEC. ARCT. EXP. FRAM 



d 



Fig. 2. Reconstructions of the four best known species of Macropetalichthys. The 

 known parts of the cranial shields are shaded, a. M. rapheidolabis NORW. & 0\v 

 After EASTMAN, */4 nfl t- size- b. M. Prwmiensis KAYSER. After v. KOENEN, '/a nat. 

 size. c. M. agassisi v. MAYER. After v. KOENEN, } /2 nat. size. d. M. Scheii KI/ER. 

 Nat. size. In the first we see the various bones of the cranial shield, and the 

 course of the sensory canals is visible in all four, s supra-orbital canal, i infra- 

 orbital canal, p post-orbital canal. I beginning of the lateral line canal. 



