278 



RICHARD E. SCAMMON 



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Fig. 8 Transverse section of the mesothelial covering of the dorso-lateral 

 margin of the liver of an Acanthias embryo 13.3 mm. long (S.C. 18). X 400. 

 M.t., mesothelial tubules. 



Fig. 9 Transverse section of the dorsal portion of the liver of an Acanthias 

 embryo 15 mm. long (H.E.C. 227). X 400. H.t., hepatic tubules; M.t., mesothe- 

 lial tubules. 



