Abstract
In a varied collection of parasitic worms sent by Dr. G. M. Heydon, of Raboul, New Guinea, to Prof. R. T. Leiper, Director of this Institute, there were a number of specimens of Œsophagostomum dentatum which had been taken from the large intestine of a pig. An accompanying letter stated that the pigs at Roboul are crossbred between the local wild pig and European breeds.