1966] 
Barr — Cave Carabidae 
287 
horni Garman (caves near Lexington, Kentucky), P. emersoni 
Krekeler (caves near Bedford, Indiana), P. packardi Barr (Carter 
Co., Kentucky), and various undescribed species from central Ken- 
tucky. The group is characterized by medium size (about 4 mm in 
total length), prominent humeri with finely serrate margins, and a 
mesosternal spine or tubercle (or at least a vertical shelf when the 
mesosternum is viewed in profile). 
