-137- Psittacidae. Parrots with ordinary tongues. Cyanoramphus. A genus of small paroquets, with the tails graduated or wedge-shaped; prevailing colors green or olive-green to olive-brown. C. erythronotus is olive-green; rump and a spot on ear-coverts brown red; bluish green below; tail above bluish gray. C. ulietanus is olive brown, with head darker; rump brown-red; olive-yellow below; wings and tail gray. C. cyanurus is green, lighter below; bluish on wings and tail; crown and ear-coverts crimson, as also a patch on each side of rump. Cuculidae. Cuckoos. The old world members are mostly parasitic, laying their eggs in nests of other birds. A great deal of mystery appears to prevail over the egg-laying habits of the genus Urodynamis, the only one in this part of the Pacific. This bird was thought to spend the breeding season in New Zealand, and migrate north over most of Polynesia, then travel over countless miles of ocean just for the opportunity of laying a few more eggs in New Zealand. The New Zealand bird is now regarded as a resident, and the Polynesian form is believed to be a resident in its own region, but nothing is known of its "nesting" habits. It occurs on some islands which have no other land birds, and the question arises whether it deposits its eggs in nests of terns and permits the latter to raise the young cuckoos on fish food; or whether it builds its own nest in such islands; or whether it migrates to other islands which have suitable lands birds