Our knowledge that the infective larvæ of certain parasitic nematodes are capable of actively boring into intact skin and of thus gaining entry into the host dates from the epoch-making discovery of Looss, who, in 1897, accidentally infected himself with Ancylostoma duodenale, the mature larvae of which entered through the skin of his hand (Looss, 1911, pp. 456−459).

In a recent study (1924) I have given an account of the genus Kiluluma, describing six species collected by Prof. Leiper from an African rhinoceros in Uganda, and have elucidated certain interesting points in its anatomy. A further study of the material has revealed the presence of four new species which form the basis of the present communication.

“GAPES,” a disease of Poultry caused by the presence of Syngamus trachealis in the windpipe, is a common disease in the Aberystwyth area, and is generally known among the Welsh farmers and poultrykeepers as “Clefyd-y-big” (the disease of the beak).