EXPLANATION OF PLATE VII. 
Figure 1. ALASMODONTA RUGOSA Barnes, % natural 
diameter. 
Figure 2. ALASMODONTA RUGOSA Barnes. Showing dark 
border on edge of interior. 34 natural diameter. 
Figure 3. ALASMODONTA EDENTULA Lea. Natural size. 
‘* 4,  ALASMODONTA DELTOIDEA Lea. 4 natural 
diameter. 
Figure 5. ALASMODONTA EDENTULA Lea. <f ¥% natural 
diameter. 
Figure 6. ALASMODONTA EDENTULA Lea. Q % natural 
diameter. 
Figure 7. ALASMODONTA MARGINATA Say. % natural 
diameter. 
