Just lost iPod touch 5G on the city bus can I get a replacement?

No.

If you have homeowners' insurance or purchased the iPod with a credit card, check with the appropriate company and see if your iPod might be covered against loss. Otherwise you'll have to buy another, just as you would if you lose anything else. Product warranties don't cover against theft, just factory defects.

Regards.

Have you checked with the bus company in the vain hope that someone has handed it in?