Letter from Ian Dunn; Lake Katwe, Uganda; to Peter Greenwood; Cromwell Road, London Says that Bob Heath did not arrive on 20-21 January. He has set nets in the crater and by lifting them at 15 minute intervals has obtained undamaged H. wingatti. He has put them in the tanks and will pass them over to Heath. He has also described the colour of them specimens and will dispatch them in a separate air-mail. Says he now realises how much 'difference the situation makes when describing the vagueness of colouring in these fish'. He explains that the fish were described in the labatoratory using electric light and not in direct sunlight. 23 January 1968