PLATE XXXVIII. 



Page. 

 BucniCEiiAS SWALLOVI Shumard 1(38 



Nut. Mus. Cat. Invert. Foss., 22938. 

 Fig. 1, 2. Two views of a small specimen. 



3. Septum of another example, slightly enlarged. (See PI. xxxvu.) 



268 



