Name that Minor Race (A Game for CT alums)

Hi!

I'm sure someone out there can answer this:

What was the name of the minor race that looked like big rhinos with
arms?  They were good medics, and a small pic of them was featured in
every medical section of the Traveller Digest.  The Travellers Aliens
boxed set also had one, along with an Ael Yeal (sp??), another
"popular" alien race.

Where is the original material on them?  I think it's in An Issue of
TAS that I don't have...

Thanks!

Matt

P.S. I'd like to incorporate them into my campaign, which is why I'm
interested.