PLATE 67. 



Page 



Fig. 1. Strophostti,tjs obtusus. 305 



1 a. View showing the aperture with the obtuse spiie, which is barely visible above the second 

 volution. 



1 b. View looking upon the spire. 



Fig. 2 a - e. Strophostylus fitctii. 8Uti 



2 a. View of the aperture of a young shell. 



2 6. View of the spire of tlie same, which preserves but two distinct volutions. 



2 c. View of the spire of a larger specimen. 



2 d. A large individual in which the apex of the spire is covered by stony matter. 



2 c. View of the aperture of the same. A careful removal of a portion of the stone from the 

 aperture, since this figure was drawn, has .shown the columellar margin, the spiral groove 

 within, and the thickened ridge or callosity beyond. 



Fig. 3. LOXONEMA ATTENUATA. 296 



8. A cast of the interior, preserving eight volutions. 



Fig. 4. EUOMPHALUS DISJUNCTUS. 340 



4 a. The lower side of a cast of this species. 

 4 6. Profile view of the same. 

 4 c. Transverse section at the point "f fracture shown in fig. 4 a. 



