PLATE 25. 



Page. 



Pig. i. Scaphites nodosus, var. brevis 42<; 



1, a. A peripheral and aperture view of the type of this variety. 



1, 6. A side view of same. 



1, c. A septum of same, magnified about two diameters. 



Figs. 2, 3, and 4. Scaphites nodosus, var. quadrangtjlaris 428 



2, a. A side view of a rather compressed specimen. 

 •i, b. A peripheral and aperture view of same. 



2, c. A septum of same, magnified to about three diameters. 



3, a. A side view of the more convex type-specimen of this variety. 

 3, b. A peripheral and aperture view of same. 



3, e. A septum of same, magnified a little more than three diameters. 



4. A side view of a larger imperfect specimen. 



