Figs. 144-150 Hypogastrura nivicola (Fitch), drawn from cotypes in USNM and from a specimen in the Boerner collection BMNH.

Fig. 144 mucro and apex of dens × 1000 specimen BMNH
Fig. 145 mucrodens × 400 specimen BMNH
Fig. 146 hind foot × 400 specimen BMNH
Fig. 147 hind foot × 1000 cotype USNM
Fig. 148 PAO "Nebenhocker" and ocelli right side of animal × 600 cotype USNM
Fig. 149 PAO nebenhocker-like structure and adjacent ocelli × 1000, cotype USNM
Fig. 150 mucrodens × 1000, cotype USNM

Figs. 151-157 Hypogastrura pseudarmata (Folsom), drawn from co-types in USNM.

Fig. 151 Ant IV × 600
Fig. 152 PAO and adjacent ocelli × 1000
Fig. 153 PAO and ocelli right side of animal × 600
Fig. 154 mucrodens × 600
Fig. 155 hind foot × 1000
Fig. 156 SO Ant III × 1000
Fig. 157 Abd VI anal spines and setae from above × 600