RECENTLY, Dales1 and Eales2 recorded the occurrence of Acanthocephalus ranæ Schrank in Great Britain. Three specimens of this species were discovered during routine dissection of Rana t. temporaria L. this session, and a further eight specimens in the departmental collection have been examined. Of the latter, seven were taken from Bufo b. bufo (L.) and one from R. t. temporaria. A summary of the ten specimens is given in the accompanying table.