16 



ARKIV FÖR ZOOLOGI. BAND 10. NIO 8. 









CÅurvdM. ■' 



\ 



I 



Fig. C. — Diagrams of the chondrocranium of Mola 1,5 mm. in length 

 (after microscopieal sections). The dimensions are not quite exact. I, The 

 chondrocranium seen from above. IT, The trabecle and the cranial base. 



t-tcZu/nx 



4*>v^a»vc/if 



tA-^4^ 





. UiCii^ i*U.O. «-«>WTVVt»».»tf 





-- C^.,»\J-^ 



Fig. D. — Diagrams of the chondrocranium of Spheroides testudineus L., 



18 mm. in length (after microscopieal sections). The dimensions are not 



quite exact. I, The chondrocranium seen from above. II , The trabecle 



and the cranial base. 



