I know nothing positive of the nidification of the Frigate. On the face of Pedro Bluff, about four feet from the surface of the sea, which, however, in stormy weather dashes furiously into it, there is a hole into which a man may crawl, but which, within, widens into a spacious cavern. A person who had visited this place, told me that on its floor lie the skulls and bones of men, mouldering in damp and decay; the relics, probably of some of the unfortunate Indians, who preferred death by famine to the tortures and cruelties of the Spaniards. To this cave, he affirmed, the Frigates and Pelicans resort to lay their eggs; depositing them on the projecting ledges and shelves of the soft and marly rock. On my way up to Kingston from Bluefields in June, lying windbound under the Pedro, I induced a white man residing there to accompany me to the face of the Bluff, where he said the Pelicans and Frigates roosted, and where the former built and laid. After walking about a mile in the most burning heat, through cacti, aloes, and spinous bushes, a most peculiar vegetation, and over the sharp needle-like points of honey-comb limestone, occasionally leaping deep clefts, we came to the spot. Many birds of both kinds were sitting on the low stunted trees, but we could not find a single nest nor eggs; though, as my guide said, at some times they were numerous, but only of the Pelican; of the Frigate’s nidification he knew nothing. The gular pouch of the old male, is not connected with the mouth, like that of the Pelican, but appears to be an air-cell; perhaps having some analogy to the erectile caruncles of the male Turkey. If we take the skeleton of the Pelican as a standard, the sternum of the Frigate is greatly developed _laterally_, as that of the Booby is, _longitudinally_. The middle claw is pectinated. I think I know of no bird so infested with entozoic worms as the Frigate. Immense bunches both of tænoid and cylindrical worms are found in almost every specimen, besides some curious kinds apparently of a higher organization. Bird-lice and bird-flies also infest it. One which was wounded, on being taken up, was fierce, endeavouring to seize with his beak. And a specimen kept alive by Dr. Chamberlaine, became animated and pugnacious when the children or servants approached it, and struck at them with its formidable bill. TROPIC BIRD.[134] _Phaeton æthereus._—+LINN.+ Aud. pl. 262.