dstiles - 6:24 pm on Dec 15, 2013 (gmt 0)
188.8.131.52 - 184.108.40.206 are a proxy IPs or their own tools (eg feed, translate etc - they are rubbish at segregation), so it's not a bot, it's a person (or bad bot) using the proxy. It's possible it's a google employee but could as easily be public access.
The complete google range within this subrange is 220.127.116.11 - 18.104.22.168. I have 22.214.171.124 - 126.96.36.199 for bots within that range.