Mashroom for Id : 1 images.
mashroom photographed at Valley of Flowers on 20 Jully 2008
looks like family Bovist to me.
but need to see more, to say exactly which Bovist.
Ya it is Bovita spp. but not B. citrina which is very common
But if you want spp of it then one must collect the sample in all stages of the fruiting body. Let me tell you one thing that in Fungi it is really not correct to tell you unless you study the microscopic characters with macroscopic characters . so please do send me the well dried material as well as photos from all possible angles, surface views in zoom will also help in correct identification.