In Bellino v. Superior Court (1977) 70 Cal.App.3d 824, the court was considering whether juvenile court proceedings to make several developmentally disabled minors dependent children of the juvenile court under Welfare and Institutions Code section 300 (formerly 600) had to be initiated by a county officer (the probation officer acting for the county Department of Public Social Services) or by the director pursuant to section 416 et seq. The court in the Bellino case held only that developmentally disabled or any other abandoned children come within the jurisdiction of the juvenile court under Welfare and Institutions Code section 300 et seq. ( Bellino, supra, 70 Cal.App.3d at pp. 828-830.)