Plate 106 
This plate from Proceedings of the United States National Museum. 
FIGURE PAGE 
1,2,3. Cyclostremella califarnica Bartsch. 223 
4. Vitrinella williamsoni Dali. 216 
5. Vitrinella eshnauri Bartsch. 217 
6. Vitrinella ivillianisoni Dali. 216 
7. Vitrinella eshnauri Bartsch. 217 
8. Vitrinella alaskensis Bartsch. 217 
9. Vitrinella eshnauri Bartsch. 217 
10. Vitrinella alaskensis Bartsch. 217 
11. Vitrinella stearnsii Bartsch. 218 
12. Vitrinella alaskensis Bartsch. 217 
13. Vitrinella stearnsii Bartsch. 218 
14. Vitrinella stearnsii Bartsch. 218 
