[Endoceras] duplex," Wahlenherg et auctt. 

 Fig. 2. 



401 



Orthoceras kinnekuJlense. — a, fragment of the septate part of the shell 

 (about one half of it), with some of the test remaining, natural size 

 (s, siphuncle) ; h, portion of the test, greatly enlarged ; c, outline of 

 the entire specimen reduced one half ; d, outline of section, restored 

 from another specimen, showing siphuncle at s. 



Orthoceras revalense, sp. no v. 

 Sp. char. Shell straight. Section elliptical, the ratio of 



