apt-get is not working properly

Dear Friends

I am trying to install my ncurses package in my Ubuntu Distro.

I am getting the following error. But i dont know what is the problem. Can
anyone help me

 Code:

mamse at mamse-ThinkCentre-M80:~/linux-3.15.8$ sudo apt-get install
ncurses-develReading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package ncurses-devel
mamse at mamse-ThinkCentre-M80:~/linux-3.15.8$
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