SEA-FISHERIES LABORATORY. 



215 



Spinal cord 



Pig. 2 



Longitudinal^ 

 Muscles m f*'~M 



Glomus-//-. , \ ' 

 Nephrostome-//^: O • " 



[/jLNotechord 



/\ ^l_-''4Nephrosrome 



Pronephric 

 ^ it chamber 



■/5=v.' -^T^F- JlSe&menf-aJ 

 " duch 



.^ P^Vr-^Jcfesophagus 



Hepatic fissue 

 Inf. 



Pigment" layer 



J.J del. 



Fig. 1. A. Section of liver, showing pancreas round a vein, x 225. 

 Fig. 1. B. Section of a part of the mesentery, x 22. 

 Fig". 2. Part of a transverse section of a 12 days' old larva. 

 Fig. 3. Transverse section of ovarian wall, x 26. 



