You are right..
I cannot find them either.
I conducted these searches...
By name.. and search results tell me that they are on the Hamburg list..
I also searched by Anton's age 40 on the Hamburg passenger lists.. page by page.. (there aren't many pages for this voyage)
I also searched for other passengers on the same page NEW YORK passenger list and some people do not show up on Hamburg list. Weird!
But it does say..
"Please note that only the years 1877-1914 have been indexed so far. "
but yet... we get thishttp://search.ancestry.com/cgi-bin/sse.dll?indiv=1&rank=...
I also searched for the H?nkleman* family just above his name on the same page... and yet no Hamburg list.. but they are indexed.... http://search.ancestry.com/cgi-bin/sse.dll?indiv=1&rank=...
Have you tried to search herehttp://search.ancestry.com/search/db.aspx?dbid=1166&path