Cephalorhynchus is a genus in the dolphin family Delphinidae. It consists of four species: \n* Commerson's dolphin, C. commersonii \n* Chilean dolphin, C. eutropia \n* Heaviside's dolphin, C. heavisidii \n* Hector's dolphin, C. hectori The species have similar physical features—they are small, generally playful, blunt-nosed dolphins—but they are found in distinct geographical locations.