[X-Unix] ssh sudo password in clear text

[Paul Hess]

Hi all,

I have a command in my bin directory as follows:

    ssh someserver.com sudo mailstuff/sa-learn.sh

When it executes the remote sudo command, it prompts me for a  
password which, when I type it, appears on my screen in cleartext  
rather than hidden.  I am using the standard OS/X terminal.

Is there some way I can avoid having that password appear in cleartext?

TIA!

                                  - Paul