Bull. U. S. B. F. (No. 110.3.) 
Figure 14.— Male (left) and female (right) specimens of Lake Pepin mucket, Lampsilis siliquoides pepinensis Baker ( Larnpsilis 
luteola of authors), Cross Lake, Minn. Upper male, 9.22 centimeters; lower male, 8.82 centimeters; upper female, 8.82 
centimeters; lower female, 7.93 centimeters in length 
