There are two bands called Rhesus, one from 1) France and 2) from the UK. 1) French Rhesus
The French Rhesus have unfortunately called it a day.
They recorded 2 full studio albums, Sad Disco and The Fortune Teller Said. More information can be found here:
http://fr.wikipedia.org/wiki/Rhesus_(groupe) 2) UK Rhesus
The UK Rhesus released two EPs (Narcolepsy Baby and Bored Games) and have recently released their first studio album, Murdoch Drive, More information can be found here:
http://www.rhesusrock.com

Read more about Rhesus on Last.fm.