1911] Chandler: A Lymphoid Structure in Lepisosteus 89 





ant. I. cb. 



post, I. cb. 



myelen. gl. 



sp. cd. 



Fig. A. Dorsal aspect of brain of Lepisosteus osseus, with myelence- 

 phalie gland in situ. X 10. ant. I. cb., anterior lobe of cerebrum; 'post. I. 

 cb., posterior lobe of cerebrum; opt. 1., optic lobe; trilob. cbl, trilobed cere- 

 bellum; myelen. gl., myelencephalic gland; sp. cd., spinal cord. 



