a1 School of Public Health and Administrative Medicine Columbia University New York City
1. Of 40 adult toads, Bufo marinus L., collected from 4 parishes of the Bermuda Islands, 82–5 per cent were infected with the lung worm Rhabdias sphaerocephala Goodey. The average number of worms per infected animal was 10 and the largest number recovered from a single toad was 50.
2. Although some eggs hatch in the lower rectum and cloaca, most do not hatch until they are evacuated and are lying in or on the fresh faecal material on the ground.
* Contribution No. 248 of the Bermuda Biological Station. This study was supported by research grant E–1350 from the National Institutes of Health, Public Health Service and from the Child Frick Fund of the Bermuda Biological Station.