The appropriate department may at their discretion—
(a)upon payment by an applicant of the prescribed fee, grant to him a licence in the prescribed form authorising him to import and keep, or to keep, musk rats in accordance with the terms of the licence and with the regulations, and from time to time renew any licence so granted; and
(b)revoke any such licence, if it is shown to their satisfaction that the holder thereof has failed to comply with any term of the licence or with any of the regulations, or has been convicted of an offence under this Act.