A new copepod parasite, Lernanthropus dussumieria n.sp., from the gills of a Madras fish

Four specimens of this parasite were collected from the gills of about two dozen Dussumieria acuta , a fish which is of market value in Madras. Of the four specimens, two were female and two were male; no two were found in the same fish. Both the males were 1·5 mm. long, while the two females measured 2·6 and 2·5 mm. respectively.