The colour-physiology of Hippolyte varians

The following paper gives in a categorical fashion the chief results of a research on the changes of colour in the prawnHippolyte varians . The work was carried out last year partly in the Zoological Laboratories of Owens College, Manchester, partly at the station furnished by the Lancashire Sea Fisheries Committee at Barrow; and during the past summer in M. Perrier’s Laboratory at St. Vaast, Normandy.