I've just sent myself some coins from Bittrex to StartJOIN to try and troubleshoot the problem for you. I'll post my findings.
Bittrex does not normally run full wallets for all their coins -- just API hooks AFAIK??
I've seen some really slow transit times with some of the Alts not getting picked up by their respective blockchain for over a day -- if you get the TXID they usually show up eventually....