14 



JOHAN KI/ER. 



[SEC. ARCT. EXP. FRAM 



''/,(>, 



:o o\ 



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

 known parts of tlie cnmial shields are shaded, a. M. rapheidolabis NORW. & Ow 

 After EASTMAN. ',4 nut. size. 6. M. Prumiensis KAYSER. After v. KOENEN, 1; 2 nat. 

 size. c. M. ayassizi \. MAYER. After v. KOENEN, Va na t. size. d. M. Sclieii KI^:R. 

 Nut. 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. 



