| Mesomphix pilsbryi (G. Clapp, 1904) And Mesomphix globosus (MacMillan, 1940) Comparison |
| Left: Mesomphix pilsbryi (G. Clapp, 1904) Striate Button |
| Right: Mesomphix globosus (MacMillan, 1940) Globose Button |
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Near Florida Caverns State Park, Marianna, Jackson Co., Florida (both 15 mm.) |