74 Scientific Proceedings, Royal Dublin Society. 



HiRUNDO BICOLOR (Vieill.) White-bellied Swallow. — It arrives 

 in company with tlie last species, and their migrating movements 

 seem very similar. They are about equally numerous, but H. 

 hicoloT seems perhaps to mix more freely with other species than 

 does H. horreorwm. 



Stelgidopteryx serripennis (Baird.) Rough-vjinged Swallow. 

 — This is the most numerously represented species among the 

 swallows. It arrives at least a fortnight earlier than the two 

 preceding species, and in considerable numbers. The earliest 

 that I have taken was on the I7tli April, and though most of 

 them appear to leave by the beginning of J une, yet a few may be 

 seen now and then throughout the summer. 



CoTYLE RIPARIA (Boie.) Sand Martin. — I have never taken 

 this species, but I believe I have seen it not unfrequently, and 

 once, 18th May, I have certainly done so. 



ViREOSYLViA OLIVACEA (Bonap.) Rcd-cyed Vireo. — In summer 

 this is perhaps the commonest bird found in the woods. I have 

 not noticed its arrival as soon as many of the other small spring 

 migrants — not, indeed, until May is well advanced. They are 

 indefatigable in hunting for larvae, on which I believe they chiefly 

 subsist, but on one occasion I saw one eating a large brownish 

 beetle or cockroach, holding it on the bough with its foot, picking 

 off first the legs and wings, and shifting its foot now and then 

 to get a better hold. During the blazing heat of the midday sun, 

 when the leaves hang down from the trees, when all life is still, 

 and the woods seem asleep, the little red-eyed vireo may yet be 

 seen hopping quietly about among the branches, the only living 

 thing that has energy to move. 



YiREO NOVEBORACENSTS (Bonap.) White-eyed Vireo. — Not 

 nearly so common as the last, and is found among the thick 

 bushes which border the streams and rivers instead of in the woods. 

 The earliest note I have of its arrival is 20th of April. Its song 

 is very marked and peculiar, though not musical, and resembles 

 " kit-a-witch-ha-wai-e-o." 



Ampelis cedrorum (Sclat.) Cedar Bird. — This is a winter 

 visitor, being most common in. December. I doubt if any of 

 them nest in the district, though I have taken immature birds 

 as early as August the 7th. I have seen it stated that they are 

 perfectly mute, but although they are remarkably silent birds. 



