Identify this one

I don't know what it is but it is huge.

I'm not sure exactly what that one's called but it closely resembles a Sydney. Here is a link a pic. http://www.usna.usda.gov/PhotoGallery/HippeastrumGallery/H_Sydney.html

Missi

The bottom petals are all white and since there are so many hybrids I think this must be something else. Thanks for the response.

I have some similar to yours that someone gave me and it just blooms today for the first time. The color isn't quite as red as yours though.