Plate 81 
This plate from Proceedings of the United States National Museum. 
FIGURE PAGE 
1. Alvania cilrno Bartsch . 100 
Type. 
2. Alvania tumida Carpenter .Not in text 
3. Alvania oldroydae Bartsch. 98 
Type. 
4. Alvania clarioncnsis Bartsch .Not in text 
Type. 
5. Alvania effnsa Carpenter. Not in text 
Type. 
6. Alvania lara Bartsch.Not in text 
Type. 
7. Alvania acquisculpta Keep . 97 
Type. 
8. Alvania ima Bartsch.Not in text 
Type. 
