偽血系
Pseudhaemal \Pseud*h[ae]"mal\, a. [Pseudo- + h[ae]mal.] (Zo["o]l.) Pertaining to the vascular system of annelids. {Pseudh[ae]mal fluid}, the circulatory fluid, or blood, of annelids, analogous to the blood of vertebrates. It is often red, but is sometimes green or colorless. {Pseudh[ae]mal vessels}, the blood vessels of annelids.