This is the family that contains the longest millipede known from North America, a 6 1/2 in. paeromopodid from Yosemite Nat. Pk., California. Rowland Shelley
Shelley, R.M. and S.B. Bauer. 1997. New records and species, and taxonomic alterations in the milliped family Paeromopodidae (Julida). Entomological News. 108(1): 1-14.