The above notes in some degree arranged, and slightly abridged, I quote from Robinson’s valuable MSS., who was evidently much interested in the bird he has so minutely described. That interest I myself felt in no small degree, on reading his notes, as there appear manifest indications of an intermediate link between the diurnal and nocturnal Fissirostres. It was therefore with very much pleasure that I saw on the 4th of last April, what I believe to have been the present species. At Content, in St. Elizabeth, as evening approached, _after a little rain_, swallows of three species were careering around the mountain: the White bellied Swallow and the Palm Swift were numerous, and among them was a very large black species, with a white collar, rather less numerous, prodigiously rapid in flight. I vainly endeavoured to shoot it. A fortnight afterwards, about half an hour before sunset, _after rain_, the Piramidigs which first appeared were presently joined by the great collared Swift, which careered with them in numbers. Again, about 11 o’clock in the forenoon, in May, three of these birds swept overhead, heavy rain already falling on the mountain, and beginning to reach the spot where I was. My lad Sam, one day about noon, observed as many as a dozen passing in a flock, in straight and rapid course, when black clouds, already gathered round the mountain brow, threatened rain, which however passed away to leeward. A few days after, a little earlier in the day, and _in exactly similar_ weather, or rather amidst the first large drops of a heavy rainstorm, he saw three flying so low as nearly to skim the ground; two pursuing in mazy course a third, from which proceeded, now and then, a singular vibratory sound, which Sam imitated by the word “churr.” This singular sound, which again reminds one of the Goatsuckers, was also uttered by two, which, about the same season and hour, and in similar weather, were careering swiftly over Bluefields towards the mountain peaks.