DESCRIPTION OF A NEW BLOOD-FLUKE, CRUORICOLA-LATES N G, N-SP (DIGENEA, SANGUINICOLIDAE), FROM SEA-BASS LATES-CALCARIFER (BLOCH, 1790) (CENTROPOMIDAE)

A new blood-fluke, Cruoricola lates n. g., n. sp., is described from s ea-bass Lates calcarifer cultured in Malaysia, It is also found in Tha iland and Australia, All fish examined over 15 cm in length were infec ted in the type-locality. This sanguinicolid is differentiated from ot her genera by: the spherical seminal vesicle; the large, single testis extending beyond the intestinal caeca; the medial, bi-lobed ovary; an d the single column of sub-marginal, laterally directed, evenly spaced spines. It has separate genital pores which are close together. Adult s are found predominantly in the mesenteric venules of the venous circ ulation. Juveniles are commonest in the caudal kidney.