94. during my stay though many were examined. On Uvea the hordes of mosquitoes during the rainy months doubless influence Collocalia to a considerable extent but there are no mos- quitoes to speak of on Lifu or Mare Is. I examined breeding colonies on all 3 islands (all very similar to the descrip- tion given of a colony in my Mare Is. notes) and the follow- ing were my findings briefly. COLLOCALIA SPODIOPYGIA LEUCOPYGIA (WALLACE):- CONTINUED On Mare. Colony examined just after height of breed- ing season (21st Dec. '37) Many immatures and very many cold and infertile eggs about. Few adults still brooding. See Mare Notes (no close detailed sexing done). Uvea Is. 4th May, 1938. Notes on a colony examined including work on the night of the 4th and early morning of the 5th. The colony is in a cave in the sheer 100 ft. cliff of one of the abrupt coral uplift outcrops in the south of the island immediately above the tidal lagoon arm about 25 ft. above the water, well into the cave where it was dark, nests on ledges at varying heights right up to the roof (about 25 ft. above the water, well into the cave where it was dark, nests on ledges at varying heights right up to the roof (about 25 ft.) ledges were easily accessible and nests easily examined (90 per cent being easily reached.) Examined about 180 counted nests and there were more unexamined (probably a little over half the total being counted at all levels making say 300 nests in the colony at full capacity. Of the 180 counted nests 49 had birds on them, 14 of which were captured and examined, all were immatures with skulls up to 1/5 or 1/4