PLATE LI. 



Baleenoptera borealis. 



Fig. 1 . Ventral view of genito-urinary apparatus in situ. 2 X natural size. 

 Fig. 2. Jejuno-ileum, ventral view. 2 X natural size. 



Fig. 3. Jejuno-ileum, dorsal view. In these two figures the major coils which pass from left to right are tinted, 

 those passing from right to left are uncolored. 



1. Adrenal. 



2. Kidney. 



3. Ovary. 



4. Oviduct. 



5. Ostium abdominale. 



6. Cornua of uterus. 



7. Bladder. 



8. Colon. 



9. Postcava. 



10. Left adrenal vein. 



11. Coeliac axis. 



12. Superior mesenteric artery. 



13 Umbilical artery. 



14. Ligamentum latum. 



15. Ligamentum teres. 



16. Fold on venter of lig. latum. 



17. Plica diaphragmatica ovarii. 



18. Mesentery. 



19. Reflection of peritoneum upon visceral complex. 



20. Left coronary ligament. 



21. (Esophagus. 



22. Proximal jejunum. 



23. Terminal ileum. 



24. Centrum tendineum. 



