Please help ID cacti

Just got this guy and having trouble IDing...Thanks!

 

Looks more like a Euphorbia than a "true" cactus. With a bit of time you should be able to find it on this page: http://www.desert-tropicals.com/Plants/Euphorbiaceae/Euphorbia.html

 

Thanks for the link! I looked at all their Euphorbias and nothing comes close. When I first saw it I thought it was a Euphorbia but the closest thing to it I could find was a kind of Cereus Monstrous. Thanks again...I'll keep looking!

 

I think it may be a slightly "monstrous" form of Myrtillocactus geometrizans.

 

Thanks TonyR... I think you nailed it! I found a pic of an identical one on-line. They are beautiful!

 

tony beat me to it, nice specimine.
love the columnar monstroses, ive got a trichocereus bridgesii monstrose colum, not the clumping type :)