It shall be the duty of the county attorney, in counties having a county attorney, (in the county in which the complaint is made) to prosecute all cases relating to natural children where the complainant is a state or county public welfare official. He shall receive as compensation for his services, when and if performed, not to exceed the sum of One Hundred Dollars ($100.00) for any one month, in addition to compensation provided otherwise, out of the county treasury upon an order of the county, circuit, or chancery judge. In counties not having a county attorney, the complaint shall be prosecuted by the district attorney, or by an attorney representing the state or county public welfare official as the petitioner, who shall receive the same compensation as herein provided for the county attorney.