Legolas' kill count of 41

So it was that in the light of a fair morning King Théoden and Gandalf the White Rider met again upon the green grass beside the Deeping-stream. There was also Aragorn son of Arathorn, and Legolas the Elf, and Erkenbrand of Westfold, and the lords of the Golden House. About them were gathered the Rohirrim, the Riders of the Mark: wonder overcame their joy in victory, and their eyes were turned towards the wood.

Suddenly there was a great shout, and down from the Dike came those who had been driven back into the Deep. There came Gamling the Old, and Éomer son of Éomund, and beside them walked Gimli the dwarf. He had no helm, and about his head was a linen band stained with blood; but his voice was loud and strong.

‘Forty-two, Master Legolas!’ he cried. ‘Alas! My axe is notched: the forty-second had an iron collar on his neck. How is it with you?’

‘You have passed my score by one,’ answered Legolas. ‘But I do not grudge you the game, so glad am I to see you on your legs!’

The Two Towers, Book Three, Chapter 8: The Road to Isengard.