PLATE 44. 



Fig. 1. 273. 5. Endoceras annttlatum. (Pag. 207.) 



1 a. Lateral view of a fragment, showing the arching of the annu'ations towards the left side. The fine dark 



transverse lines indicate the edges of the septa. 

 1 b. Longitudinal section, showing the position of the siphuncle, convexity of the septa, and internal tutes. 



