Two new species of Tigriopus Norman, 1869 from Chonburi Province, Thailand (Crustacea: Copepoda: Harpacticidae).

Two new species of the family Harpacticidae Dana, 1846, Tigriopus namsaiensis sp. nov. and T.

The fine structure of coelomocytes in the sipunculid Phascolosoma esculenta.

Ultrastructural characteristics of coelomocytes of the sipunculid Phascolosoma esculenta were studied by transmission electron microscopy. There are several cell types in the coelomic fluid, including three kinds of granulocytes, vesicular cells, germ cells, amoebocytes, phagocytes, and erythrocytes; there are also a new cell complex which is composed of podocytes and granular cells. And several other cell types (erythrocyte and different kinds of granulocytes) gathering together was discovered in the coelomic fluid of P.