234 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 39. 



EXPLANATION OF PLATES. 



Plate 39. 



Figs. 1-3. Cydostrema miranda, greater diameter, 2.1 mm. 

 4-6. Cydostrema adamsi, greater diameter, 1.3 mm. 

 7-9. Cydostrema baldridgei, greater diameter, 4.5 mm, 



Plate 40. 



Figs. 1-3. Circulus diomedese, greater diameter, 2.2 mm. 



4-6. Leptogyra alasJcana, greater diameter, 0.85 mm. 



7-9. Circulus liriope, greater diameter, 1.6 mm. 



10-12. Cydostremella dalli, greater diameter, 1.3 mm. 



