14 



JOHAN KI^R. 



[sec. ARCT. EXP. FRAM 



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Fjg. 2. Reconstructions of the font' best known species of Mncriijietidichihys. Tlie 

 known parts of tlie cranial sliieWs are shaded, a. M. raj)lieidolabis Norw. & Ow 

 After Eastman, 1/4 nat. size. 6. M. Pruniiensis Kayser. After v. Kokni;n, '/o nat. 

 size. e. M. agas.sizi v. Mayer. After v. Koenen, ''o nat. size, ch M. Scheii Ki.er. 

 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. 2) post-orbital canal. I beginning of the lateral lino canal. 



