PLATE CIX.— Continued. 
Fig. 10. A lateral view of the cast of a specimen. The adhering shell preserves only the transverse striae 
of growth in a nearly obsolete condition. This is the typical specimen of the species described 
by Mr. Vanuxem. It was originally nearly covered and inclosed in the grand chamber of a 
large individual of Goniatites Vanuxemi. This condition of the specimen was doubtless the 
source of the error which led to regarding this one as the larger and “more abundant” form, 
while it never reaches one-half the size of G. Vanuxemi, and is far less numerous in individuals. 
Manlius, N. Y. 
Fig. 11. A transverse section of a volution, showing the position of the siphuncle, form, etc. The sides are 
more convex than usual, and the carinations at the umbilical angles are a little too attenuate— 
being stronger in the original. 
Fig. 12. An enlargement of the surface, showing the continuous transverse striae and the interrupted 
revolving striae, as appearing on the surface of the specimen fig. 9. 
