[913- Nofes. 43 
A few more Irish Ichneumonidae. 
The ichneumon flies recorded by Claude Morley {Entom. Month. Mag. 
(2), xxii., p. 19) were collected by J. N. Halbert, mostly on expeditions 
organised by the Royal Irish Academy Fauna and Flora Committee. 
He remarks that some of the species are of considerable rarity, as for 
instance Prolarchus rufus,GrsiV., an insect which is parasitic in the cocoons 
of large saw-flies of the genus Cimbex. The twelve species recorded are 
as follows — Protichneumon fuscipennis, Wesm., Forth Hill, Co. Wexford. 
Ichnoumon molitorius, Grav., Santry Demesne, Co. Dublin. Platylahus 
dimidiatus, Grav., Muckross. Glyphicnemis profligator, Fab., Woodford, 
Co. Galway. Exolytus laevigatiis, Grav., Bog of the Ring, Co. Dubhn. 
Cryptus tarsoleucus, Schr., Ross, Co. Galway. Meniscus murinus, Grav., 
Mangerton, Co. Kerr)-. Exetastes cinctipes, Retz., Lambay. Prolarchus 
rufiis, Grav., Lough Dan, Co. Wicklow, September, 1908. Henico- 
spilus ramidiihis, Lim., Kilcool, Co. Wicklow. Campoplex falcator. Thumb., 
Mangerton. Aphanistes ritficorjiis, Grav., Glandore, Co. Cork. 
Carrion Crow at Lambay. 
Mr. Francis Mason (steward to the Hon. Cecil Baring) reports to me 
that he and his son have seen on several occasions, during the last three 
weeks, a Carrion-crow at Lambay. Mr. Mason states that both he and 
his son have resided in England for a number of years, and that they are 
well acquainted with the different species of the Crow tribe, and that they 
have no doubt of the identity^of the bird. 
George C. May. 
Dublin. 
Late Stay of Swifts. 
In the Irish Naturalist for December (vol. xxi., 1912, p. 246) I find 
two notes under the above heading, which commence with — " Despite 
the coldness of August (and the Summer) the Swifts did not depart," 
&c. If the writer had stated — " Because of the cold August and 
Summer, " &c., it would have been (in my opinion) more in accordance 
with the actual facts. If any readers are sufficiently interested in this 
subject I would refer them to the Naturalist, 1907, pp. 111-114 '< wherein 
I recorded my observations on a colony of Swifts for nineteen consecutive 
years. But sufficient for the present notice is the fact that I found 
that in fine summers the Swifts left earlier than in cold and wet ones, 
and summarised thus : — " My observations seem to show that with this 
species the date of their departure is fixed more by the forwardness of 
the young brood, and by their ability to undertake the long journey, 
than by the state of the weather, or of their food supply, at the time of 
leaving. I find that in the finest summers, and consequently when there 
is the largest supply of winged insect food, this colony usually breaks 
up a day or two earlier than in colder and wetter seasons, and they will 
leave sometimes when there is apparently an unlimited supply of food 
