PLATE VI. 



FIG. u. Dorsal view of the same Lefisosteus tristceckus as Fig. 8. The dis- 

 section on the left side is carried considerably deeper than the right. Shows 

 especially the termination of the cephalic lymphatic trunks in the cephalic sinus, 

 and the communication of the latter -with the jugular vein. X ! 



FIG. 12. Similar view to Fig. u of a id-pound Lepisosteus osseus. Right side 

 not figured. X f 



I 3 6 



