Looks like either Stanhopea tigrina or Stanhopea tigrina var. nigroviolacea. sometimes they just call it Stanhopea nigroviolacea. I have a difficult time differentiating between the two.
By the way, you'll always want to keep it in an open basket such as you have. Never a pot. The flowers grow out the bottom or side and a pot will interfere with that.
Good luck!
Here's a very useful website for the identification, care, and feeding of Stanhopeas:
The Stanhopea Pages by Nina Rach, edited January 2010