Hirudisomatid Millipeds 
109 
Figs. 3-5. Comparison of penes, caudal views of 2nd male coxae. 3, O. 
bivirgata , Sonoma County, California. 4, M. absidatum holotype. 5, Polyzonium 
rosalbum, Dade County, Georgia. Scale line = 0.25 mm for all figs. 
