A new bopyrid isopod Athelges neotenuicaudis (Crustacea: Isopoda: Epicaridea) parasitic on Pagurus kulkarnii from Visakhapatnam Coast, India.

A new bopyrid isopod Athelges neotenuicaudis is reported. The new isopod is collected from the crab Pagurus kulkarnii as ectoparasite. They are found in the intertidal region of Mukkam, Visakhapatnam Coast.

Hysterothylacium pseudotumbili n.sp. (Nematoda: Anisakidae) from the marine fishes of Visakhapatnam, Bay of Bengal.

Hysterothylacium pseudotumbili n.sp. from the stomach and body cavity of marine fishes.

The life cycle of Echinochasmus bagulai (Trematoda: Echinostomatidae).

The life history of Echinochasmus bagulai, an echinostomatid trematode in birds, is reported and stages in the life cycle are described. Natural infections with cercariae, which are of the gymnocephalous type, were found in the thiarid snail Thiara tuberculata. Metacercarial cysts were found in the gills of Aplocheilus panchax, Oryzias melastigma, Gambusia affinis and Channa punctata.

Histology and histochemistry of the intermoult integument in the ghost crab Ocypoda platytarsis (Milne-Edwards) (Crustacea: Brachyura).

The histological and histochemical aspects of the integument have been described and discussed during the intermoult period of Ocypoda platytarsis. Histological observations revealed that the cuticle comprises of four layers namely epicuticle, exocuticle, endocuticle and membranous layers. Various types of cells in the subepidermal tissue have also been elucidated.

Two species of heterophyid larval digeneans from a thiarid gastropod Thiara tuberculata (Müller) from India.

Two species of heterophyid cercariae, cercaria of Haplorchis taichui and Haplorchis pumilio are obtained from Thiara tuberculata from Visakhapatnam, India. This is the first report of cercariae of both the parasites from India. The characteristic features of H.