Several specimens of this parasitic nematode were collected from the lungs of a common British Toad (Bufo vulgaris). They were examined alive, when it was at once apparent that the anterior end was different from that of R. bufonis, in that the body-wall was swollen almost to a sphere and the surrounding cuticle was correspondingly much inflated. It was also noticed that the oesophagus had a slight bulbar swelling towards its anterior end not present in R. bufonis.

The earliest account of the Strongylid parasites of the rhinoceros is given by von Linstow (1907) where he describes the only form under the name Deletrocephalus stylosus. His description of this type is brief and now inadequate and the illustrations are very few. This form, however, does not show any generic characters in common with the type species, Deletrocephalus dimidiatus, Diesing, of the genus. It was, hence, removed by Skriabin (1916) into a new genus, Kiluluma, created by him for its reception. Thus the form, D. stylosus, von Linstow, was transferred to the genus under the title K. stylosa. It may, however, be mentioned that Skriabin in his account suggests that von Linstow's Deletrocephalus brachylaimus from rock-rabbit is the probable, second species of this new genus, Kiluluma.

Although Oxyuris vermicularis occurs very frequently in children, material from which to study the early development, mature female worms, was difficult to obtain.

Specimens were found both in the normal stool and in the stool after treatment with santonin. Egg-laying began as soon as the worms came into contact with air; those which happened to be on the surface very quickly became surrounded by a white deposit of eggs and the worms themselves became reduced to fine threads, which were difficult to detect: Egg-laying was also induced by bringing females into water at body temperature.