-138- to serve as hosts. Any evidence on any of these points will be desirable; also any dates of birds seen and not obtained will be useful in showing whether the birds occur at all seasons. The Urodynamis is a large cuckoo, about 17 to 18 inches long, brown, striped and barred, with a wedge-shaped tail. Tytonidae. Barn Owls. Tyto alba lulu. The only owl in the vicinity; may differ in the several groups in Polynesia, but more material is needed for com- parison. Micropodidae. Swifts and Swiftlets. Collocalia. The "edible-nest" swiftlets. Occur in various parts of Polynesia, in several forms or species, some of them difficult to identify even in the hand; in some islands there are two or more kinds. They appear to nest in colonies, and possibly differ in their nesting habits according to species, but this point has not been studied. The usual manner of nesting is in caverns, but some have been reported as nesting against cliffs or walls of rocks in the open. Skins taken under various conditions should be noted as "from cave" etc., as an aid in later study of the series. Alcedinidae. Kingfishers. Todiramphus is a genus of flat-billed or "Tody-billed" king- fishers. T. tutus has a white or buffy collar round hind neck. T. veneratus has no white collar round hind neck, and is green above and white below.