Nowell-Usticke, G. W., 1971. A Supplementary Listing of New Shells (Illustrated) Revised Edition To be Added to the Check List of the Marine Shells of St. Croix.
New Species-Group Names:
- circumpunctatus Nowell-Usticke, 1971. p. 18. pl. III. f. 1002.
Nowell-Usticke, G. W., 1971. A Supplementary Listing of New Shells (Illustrated) Revised Edition To be Added to the Check List of the Marine Shells of St. Croix.