"3 et 4" means "three and four," but I don't know what the "pts pts" means. You should probably ask for help on Ravelry -- i know there are folks there who speak both English and French. Good luck!

Here's a link that offers translation for French knitting terms:

http://chezplum.com/french-knitting-dictionnary/

And another link to a blog that explains the series of numbers.

http://jorth.blogspot.com/2011/09/french-knitting-definitions.html#.VjVXSEvajwI

Hope that helps.