Note 251 — Chapter I · COLUGOS—BANGSRINGS—JUMPING SHREWS—HEDGEHOGS—TANRECS—RIVER SHREWS.

There is sometimes a difficulty in distinguishing between canines and premolars, and it will be seen, hereafter, that in some cases the canines are supposed to be wanting; but no Insectivore possesses two chisel-like, constantly-growing incisors in each jaw, separated by a long interval from the molars, as in the Rodents, or Gnawing Mammals.